Had a similar Google interview ~10y ago, shared GDoc. Phone connection was poor, interviewer refused let me try another line. I'd ask clarifying questions and he'd just keep acting annoyed and saying "Are you done yet?"

Frankly the most annoying interviewer I ever encountered. Served as a low water mark and inspiration for me to be as helpful, thoughtful, and kind as I could be in the next 100 phone screens/interviews I conducted for my employees.

FWIW, I've been to many a Google campus and know many employees there, so I think this was an outlier.

This is when you open a can of BS and just spray it everywhere. Go for the most esoteric and ridiculous design that you can. Elaborate on the minutia of your design at the finest level. Puff your feathers and flaunt your genius. Both bore and impress your interviewer at the same time.

"If you can't dazzle them with facts, baffle them with bullshit"

I suppose I could have, I'm not 100% sure he was paying attention to me

either way I ended up getting a cooler job somewhere else so maybe it was a good thing in the end

I had an interview with Gitlab like that years ago. Here, write some chef with only the vaguest spec - even after quizzing the interviewer to ascertain requirements.

I wonder if you are marked as never-interview-again if you leave mid interview citing reason X.