I've had that happen a couple of times where the flight was late. It worked a little; some people did remain seated until everyone w/connections (or didn't listen) deplaned. I think they ought to do this more often, especially with some of those "valid connection times" at their hubs.
Originally posted by JS:
[B]Even better, the F/A can ask those who don't have connections to stay seated until the exit queue starts moving.
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Time..... is on my side.