diff --git a/node/actors/bft/src/testonly/run.rs b/node/actors/bft/src/testonly/run.rs
index 3effb94f..102b28f4 100644
--- a/node/actors/bft/src/testonly/run.rs
+++ b/node/actors/bft/src/testonly/run.rs
@@ -1,7 +1,7 @@
 use super::{Behavior, Node};
 use anyhow::bail;
 use network::{io, Config};
-use rand::prelude::SliceRandom;
+use rand::seq::SliceRandom;
 use std::{
     collections::{HashMap, HashSet},
     sync::Arc,
@@ -15,9 +15,7 @@ use zksync_concurrency::{
     oneshot, scope,
 };
 use zksync_consensus_network as network;
-use zksync_consensus_roles::validator::{
-    self, BlockNumber, CommitQC, ConsensusMsg, Genesis, PublicKey,
-};
+use zksync_consensus_roles::validator;
 use zksync_consensus_storage::{testonly::new_store, BlockStore};
 use zksync_consensus_utils::pipe;
 
@@ -61,7 +59,7 @@ impl Test {
         &self,
         ctx: &ctx::Ctx,
         nets: Vec<Config>,
-        genesis: &Genesis,
+        genesis: &validator::Genesis,
     ) -> anyhow::Result<()> {
         let mut nodes = vec![];
         let mut honest = vec![];
@@ -92,8 +90,7 @@ impl Test {
             // Check that the stored blocks are consistent.
             for i in 0..self.blocks_to_finalize as u64 {
                 let i = first + i;
-                // Only comparing the payload; the signatories might be different,
-                // at least with the simulated gossip of the twins network.
+                // Only comparing the payload; the justification might be different.
                 let want = honest[0]
                     .block(ctx, i)
                     .await?
@@ -275,8 +272,10 @@ async fn run_nodes_twins(
                         splits,
                         validator_ports,
                         sends,
-                        &gossip_targets[&port],
-                        gossip_send,
+                        TwinsGossipConfig {
+                            targets: &gossip_targets[&port],
+                            send: gossip_send,
+                        },
                         port,
                         recv,
                     )
@@ -297,14 +296,12 @@ async fn run_nodes_twins(
 /// We have to simulate the gossip layer which isn't instantiated by these tests.
 /// If we don't, then if a replica misses a LeaderPrepare message it won't ever get the payload
 /// and won't be able to finalize the block, and won't participate further in the consensus.
-#[allow(clippy::too_many_arguments)]
 async fn twins_receive_loop(
     ctx: &ctx::Ctx,
     splits: &PortSplitSchedule,
-    validator_ports: &HashMap<PublicKey, Vec<Port>>,
+    validator_ports: &HashMap<validator::PublicKey, Vec<Port>>,
     sends: &HashMap<Port, UnboundedSender<io::OutputMessage>>,
-    gossip_targets: &HashSet<Port>,
-    gossip_send: UnboundedSender<(Port, Port, BlockNumber)>,
+    gossip: TwinsGossipConfig<'_>,
     port: Port,
     mut recv: UnboundedReceiver<io::InputMessage>,
 ) -> anyhow::Result<()> {
@@ -313,7 +310,7 @@ async fn twins_receive_loop(
 
     // Finalized block number iff this node can gossip to the target and the message contains a QC.
     let block_to_gossip = |target_port: Port, msg: &io::OutputMessage| {
-        if !gossip_targets.contains(&target_port) {
+        if !gossip.targets.contains(&target_port) {
             return None;
         }
         output_msg_commit_qc(msg).map(|qc| qc.header().number)
@@ -347,32 +344,41 @@ async fn twins_receive_loop(
         let view = output_msg_view_number(&msg);
         let kind = output_msg_label(&msg);
 
-        if can_send {
-            let s = &sends[&target_port];
+        // Remove any previously stashed message of the same kind, because the network will only
+        // try to send the last one of each, not all pending messages.
+        stash.retain(|stashed| output_msg_label(stashed) != kind);
 
-            // Send after taking note of potentially gossipable blocks.
-            let send = |msg| {
-                if let Some(bn) = block_to_gossip(target_port, &msg) {
-                    gossip_send.send((port, target_port, bn));
-                }
-                s.send(msg);
-            };
+        if !can_send {
+            tracing::info!("   VVV stashed view={view} from={port} to={target_port} kind={kind}");
+            stash.push(msg);
+            return;
+        }
 
-            // Messages can be delivered in arbitrary order.
-            stash.shuffle(rng);
+        let s = &sends[&target_port];
 
-            for unstashed in stash.drain(0..) {
-                let view = output_msg_view_number(&unstashed);
-                let kind = output_msg_label(&unstashed);
-                eprintln!("   ^^^ unstashed view={view} from={port} to={target_port} kind={kind}");
-                send(unstashed);
+        // Send after taking note of potentially gossipable blocks.
+        let send = |msg| {
+            if let Some(number) = block_to_gossip(target_port, &msg) {
+                gossip.send.send(TwinsGossipMessage {
+                    from: port,
+                    to: target_port,
+                    number,
+                });
             }
-            eprintln!("   >>> sending view={view} from={port} to={target_port} kind={kind}");
-            send(msg);
-        } else {
-            eprintln!("   VVV stashed view={view} from={port} to={target_port} kind={kind}");
-            stash.push(msg);
+            s.send(msg);
+        };
+
+        // Messages can be delivered in arbitrary order.
+        stash.shuffle(rng);
+
+        for unstashed in stash.drain(0..) {
+            let view = output_msg_view_number(&unstashed);
+            let kind = output_msg_label(&unstashed);
+            tracing::info!("   ^^^ unstashed view={view} from={port} to={target_port} kind={kind}");
+            send(unstashed);
         }
+        tracing::info!("   >>> sending view={view} from={port} to={target_port} kind={kind}");
+        send(msg);
     };
 
     while let Ok(io::InputMessage::Consensus(message)) = recv.recv(ctx).await {
@@ -398,7 +404,7 @@ async fn twins_receive_loop(
         match message.recipient {
             io::Target::Broadcast => match partitions_opt {
                 None => {
-                    eprintln!("broadcasting view={view_number} from={port} target=all");
+                    tracing::info!("broadcasting view={view_number} from={port} target=all");
                     for target_port in sends.keys() {
                         send_or_stash(true, *target_port, msg());
                     }
@@ -406,7 +412,7 @@ async fn twins_receive_loop(
                 Some(ps) => {
                     for p in ps {
                         let can_send = p.contains(&port);
-                        eprintln!("broadcasting view={view_number} from={port} target={p:?} can_send={can_send} t={}", start.elapsed().as_secs());
+                        tracing::info!("broadcasting view={view_number} from={port} target={p:?} can_send={can_send} t={}", start.elapsed().as_secs());
                         for target_port in p {
                             send_or_stash(can_send, *target_port, msg());
                         }
@@ -419,7 +425,7 @@ async fn twins_receive_loop(
                 match partitions_opt {
                     None => {
                         for target_port in target_ports {
-                            eprintln!(
+                            tracing::info!(
                                 "unicasting view={view_number} from={port} target={target_port}"
                             );
                             send_or_stash(true, *target_port, msg());
@@ -430,7 +436,7 @@ async fn twins_receive_loop(
                             let can_send = p.contains(&port);
                             for target_port in target_ports {
                                 if p.contains(target_port) {
-                                    eprintln!("unicasting view={view_number} from={port} target={target_port } can_send={can_send} t={}", start.elapsed().as_secs());
+                                    tracing::info!("unicasting view={view_number} from={port} target={target_port } can_send={can_send} t={}", start.elapsed().as_secs());
                                     send_or_stash(can_send, *target_port, msg());
                                 }
                             }
@@ -454,10 +460,15 @@ async fn twins_receive_loop(
 async fn twins_gossip_loop(
     ctx: &ctx::Ctx,
     stores: &HashMap<Port, Arc<BlockStore>>,
-    mut recv: UnboundedReceiver<(Port, Port, BlockNumber)>,
+    mut recv: UnboundedReceiver<TwinsGossipMessage>,
 ) -> anyhow::Result<()> {
     scope::run!(ctx, |ctx, s| async move {
-        while let Ok((from, to, mut number)) = recv.recv(ctx).await {
+        while let Ok(TwinsGossipMessage {
+            from,
+            to,
+            mut number,
+        }) = recv.recv(ctx).await
+        {
             let local_store = &stores[&from];
             let remote_store = &stores[&to];
             let first_needed = remote_store.queued().next();
@@ -492,9 +503,9 @@ async fn twins_gossip_loop(
     .await
 }
 
-fn output_msg_view_number(msg: &io::OutputMessage) -> u64 {
+fn output_msg_view_number(msg: &io::OutputMessage) -> validator::ViewNumber {
     match msg {
-        io::OutputMessage::Consensus(cr) => cr.msg.msg.view().number.0,
+        io::OutputMessage::Consensus(cr) => cr.msg.msg.view().number,
     }
 }
 
@@ -504,7 +515,8 @@ fn output_msg_label(msg: &io::OutputMessage) -> &str {
     }
 }
 
-fn output_msg_commit_qc(msg: &io::OutputMessage) -> Option<&CommitQC> {
+fn output_msg_commit_qc(msg: &io::OutputMessage) -> Option<&validator::CommitQC> {
+    use validator::ConsensusMsg;
     match msg {
         io::OutputMessage::Consensus(cr) => match &cr.msg.msg {
             ConsensusMsg::ReplicaPrepare(rp) => rp.high_qc.as_ref(),
@@ -514,3 +526,16 @@ fn output_msg_commit_qc(msg: &io::OutputMessage) -> Option<&CommitQC> {
         },
     }
 }
+
+struct TwinsGossipMessage {
+    from: Port,
+    to: Port,
+    number: validator::BlockNumber,
+}
+
+struct TwinsGossipConfig<'a> {
+    /// Ports to which this node should gossip to.
+    targets: &'a HashSet<Port>,
+    /// Channel over which to send gossip messages.
+    send: UnboundedSender<TwinsGossipMessage>,
+}
diff --git a/node/actors/bft/src/tests.rs b/node/actors/bft/src/tests.rs
index 2c09e9d0..36d57fbd 100644
--- a/node/actors/bft/src/tests.rs
+++ b/node/actors/bft/src/tests.rs
@@ -363,7 +363,7 @@ async fn run_twins(
             })
             .collect();
 
-        eprintln!(
+        tracing::info!(
             "num_replicas={num_replicas} num_twins={num_twins} num_nodes={} scenario={i}",
             cluster.num_nodes()
         );
@@ -387,7 +387,7 @@ async fn run_twins(
                 .iter()
                 .all(|s| *s < cluster.quorum_size());
 
-            eprintln!("round={r} partitions={partitions:?} leaders={leader_ports:?} leader_partition_sizes={leader_partition_sizes:?} leader_isolated={leader_isolated}");
+            tracing::debug!("round={r} partitions={partitions:?} leaders={leader_ports:?} leader_partition_sizes={leader_partition_sizes:?} leader_isolated={leader_isolated}");
         }
 
         Test {
diff --git a/node/actors/network/src/testonly.rs b/node/actors/network/src/testonly.rs
index e7d452e6..897d1354 100644
--- a/node/actors/network/src/testonly.rs
+++ b/node/actors/network/src/testonly.rs
@@ -13,10 +13,7 @@ use std::{
     sync::Arc,
 };
 use zksync_concurrency::{ctx, ctx::channel, io, limiter, net, scope, sync};
-use zksync_consensus_roles::{
-    node,
-    validator::{self, SecretKey},
-};
+use zksync_consensus_roles::{node, validator};
 use zksync_consensus_storage::BlockStore;
 use zksync_consensus_utils::pipe;
 
@@ -92,7 +89,7 @@ pub fn new_configs_for_validators<'a, I>(
     gossip_peers: usize,
 ) -> Vec<Config>
 where
-    I: Iterator<Item = &'a SecretKey>,
+    I: Iterator<Item = &'a validator::SecretKey>,
 {
     let configs = validator_keys.map(|validator_key| {
         let addr = net::tcp::testonly::reserve_listener();