review comments: add comment explaining pool

comms/core/src/connectivity/manager.rs

@@ -315,6 +315,7 @@ impl ConnectivityManagerActor {
             },
         }
         match self.pool.get(&node_id) {
+            // The connection pool may temporarily contain a connection that is not connected so we need to check this.
             Some(state) if state.is_connected() => {
                 if let Some(reply_tx) = reply_tx {
                     let _result = reply_tx.send(Ok(state.connection().cloned().expect("Already checked")));
@@ -323,7 +324,7 @@ impl ConnectivityManagerActor {
             maybe_state => {
                 info!(
                     target: LOG_TARGET,
-                    "No connection found for peer (status={}) `{}`. Dialing...",
+                    "Connection is not connected (status={}) `{}`. Dialing...",
                     maybe_state
                         .map(|s| s.status().to_string())
                         .unwrap_or_else(|| "NotConnected".to_string()),