Minor update to STOMP chapter

Issue: SPR-16861

src/asciidoc/web-websocket.adoc

@@ -2110,9 +2110,10 @@ will typically notice the broker is not responding within 10 seconds. Clients ne
 implement their own reconnect logic.
 ====
 
-Furthermore, an application can directly intercept every incoming and outgoing message by
-registering a `ChannelInterceptor` on the respective message channel. For example
-to intercept inbound messages:
+The above events reflect points in the lifecycle of a STOMP connection. They're not meant
+to provide notification for every message sent from the client. Instead an application
+can register a `ChannelInterceptor` to intercept every incoming and outgoing STOMP message.
+For example to intercept inbound messages:
 
 [source,java,indent=0]
 [subs="verbatim,quotes"]
@@ -2147,6 +2148,12 @@ to access information about the message.
 	}
 ----
 
+Note that just like with the `SesionDisconnectEvent` above, a DISCONNECT message
+may have been sent from the client, or it may also be automatically generated when
+the WebSocket session is closed. In some cases an interceptor may intercept this
+message more than once per session. Components should be idempotent with regard to
+multiple disconnect events.
+
 
 
 [[websocket-stomp-client]]