heard of it, but never happened to me. The closest "turn around" was 2 weeks after getting a response from a recruiter (which took 3 weeks, so let's just ignore that). But that was because stage 3-6 of the interview was compressed into a full work day of revolving teams to talk to.

Given how the other processes work, I sort of prefer to get it over with. But I understand that that's not viable for people searching while still working full time.