I'm not sure what FANG they were from, but Google doesn't have a behavioral interview so they didn't learn that there. Every non-FANG I've interviewed at has had a behavioral interview.
Huh? That's absolutely false. FYI this dude wasn't just ex-google he was ex-facebook and ex-google (worked at both). He was a Product Manager and then I think some VP of something. He was like a VP at the the parent company of the company I was interviewing for.
FAANG stand for: "Facebook (now Meta), Amazon, Apple, Netflix, and Google (now Alphabet)".
Looking at the questions I suspect these came from facebook but were altered. I even asked the next interviewer (the one I was actually told I was being interviewed by) that I found the questions strange and he agreed and said that the guy was kind "out there".
Huh? Maybe there wasn't a officially-labeled "behavioral interview" on the schedule, but the vast majority of interviews I had with Google in the past included behavioral questions/discussions/etc.