I worked for what was technically an Alphabet company, and it was no different from working at Google. I was told, but never confirmed myself, that I worked for Google and Google contracted me out to the subsidiary. Maybe things have changed in the intervening 5 years since I was there, but this was something for the accountants and not something that affected everyday life.

Hiring a CFO from the banking industry did make it more difficult to get the free food, though. The cause and effect there was immediately noticeable.