diff --git a/src/runtime/communication.rs b/src/runtime/communication.rs
index b16e7a7537fcd8b0fd9498182f9064de078c02fc..b7a263cde8f75c4dc4d45b8bd0d958de39988d13 100644
--- a/src/runtime/communication.rs
+++ b/src/runtime/communication.rs
@@ -204,6 +204,7 @@ impl Connector {
         use SyncError as Se;
         //////////////////////////////////
         log!(
+            @COMM_NB,
             cu.inner.logger,
             "~~~ SYNC called with timeout {:?}; starting round {}",
             &timeout,
@@ -254,6 +255,7 @@ impl Connector {
             }
         }
         log!(
+            @COMM_NB,
             cu.inner.logger,
             "All {} proto components are now done with Nonsync phase",
             branching_proto_components.len(),
@@ -284,7 +286,7 @@ impl Connector {
             getter_buffer: Default::default(),
             deadline: timeout.map(|to| Instant::now() + to),
         };
-        log!(cu.inner.logger, "Round context structure initialized");
+        log!(@COMM_NB, cu.inner.logger, "Round context structure initialized");
 
         // Explore all native branches eagerly. Find solutions, buffer messages, etc.
         log!(
@@ -353,6 +355,7 @@ impl Connector {
         // restore the invariant: !native_batches.is_empty()
         comm.native_batches.push(Default::default());
         // Call to another big method; keep running this round until a distributed decision is reached
+        log!(@COMM_NB, cu.inner.logger, "Searching for decision...");
         let decision = Self::sync_reach_decision(
             cu,
             comm,
@@ -360,7 +363,7 @@ impl Connector {
             &mut branching_proto_components,
             &mut rctx,
         )?;
-        log!(cu.inner.logger, "Committing to decision {:?}!", &decision);
+        log!(@COMM_NB, cu.inner.logger, "Committing to decision {:?}!", &decision);
         comm.endpoint_manager.udp_endpoints_round_end(&mut *cu.inner.logger, &decision)?;
 
         // propagate the decision to children
@@ -402,7 +405,7 @@ impl Connector {
                 Ok(Some(branching_native.collapse_with(&mut *cu.inner.logger, &predicate)))
             }
         };
-        log!(cu.inner.logger, "Sync round ending! Cleaning up");
+        log!(@COMM_NB, cu.inner.logger, "Sync round ending! Cleaning up");
         ret
     }