Your launch retrospective needs the people who left

Launch retrospectives over-sample the people who stayed long enough to talk. The most flattering feedback is also the easiest to collect.

I want the quiet exits in the room: people who clicked but did not start, started but never reached value, or used the product once and vanished. Even a tiny exit survey paired with the last completed step can reveal more than another call with a power user.

What is the earliest silent-exit signal you review after launch?