Applied through a recruiter about 1+ year after first contact.

There were only phone screens and an on-site interview; no coding interview over the phone (perhaps because I was referred by somebody inside).

Their preparatory e-resources helped, but the space of possible questions is limitless, and there's only so much that one can study. Personally, it's been 10+ years since I last had to delete a node from a binary tree, so my algorithms were rusty, although I did study.

During the on-site visit, there were five technical interviews plus lunch.

I'd say all were considerate and respectful, but two of them were not very polished communicators, in my opinion.

My lunch was accompanied by a friendly engineer -- the best part of the day.

I'll (mostly) respect the NDA, but one starter question was "In Python, what is a generator?". I got that one; the rest, not so much.