To-be 46: the session gets its key within seconds, not at once (review of #334)

The tool waits for the router's word before it answers, as ADR 0332 §5 says.

03-DESIGN/01-to-be/46-the-conversation-with-the-operator.md

@@ -218,7 +218,7 @@ is the asker: the ask goes out under that module's own name, so the bus proves w
 gains no verb. The session gives a headline, the context in plain words, two to four options with exactly
 one recommended and why, what it does if nobody answers, its own name, and an expiry of five minutes to a
 day less ten minutes. Every option is an approval bound to the question, so only a channel that proves who
-answered carries it, never the desk. The session gets a key at once and reads the answer by it later:
+answered carries it, never the desk. The session gets a key within seconds and reads the answer by it later:
 waiting, the option chosen with who chose it and where, ended without a choice, or not proven when the
 router's record does not hold to the question asked. At most two such questions are open at once, so one
 open ask is always left for a proposed instruction section. The answer informs the session and authorises