Before even starting the interview process, I took weeks to reviews algorithms, chopped through interviewcake/hackerrank/leetcode challenges, did numerous test-interviews on pramp and made sure Google was the last of my interviews to get as much experience in as possible. In the end, it didn't matter.
The phone call was almost not understandable. My interviewer had a horrible accent and extreme background noise, almost like he was in a public space with a really bad microphone. I had to ask 5 times to repeat his question or clarify what he meant which definitely irritated him as well.
When asked before the interview in what language I would like to do it, I said python. My interviewer gave me a C++ question (+ C++ class) with streams (I think that's what it was? I'm not a C++ guy). When mentioning that I said I want to do it in python he said "oh uhm... well, just implement your solution in python then", which was a little weird because python doesn't support streams.
I asked numerous times during the interview if I understood his question correctly, he said yes. I went ahead with implementing it that way and then later he asked me why I did it this way and that he wanted something else.
It was a disaster. I didn't pass the interview (they were 50:50 on me) and do not plan to apply again. I am at a great startup now and probably forgot most of that algorithm and data structure knowledge again.