Google

OA -> Phone Interview 1 -> Phone Interview 2 The first interviewer was very nice. I was too nervous at that time, but they gave me hints and led me to the correct answer. The second interview was okay; I think I performed much better than the first

I had nine rounds of interviews and a scheduled tenth round, for which the interviewer never showed up. Interviewers were frequently distracted (e.g., on their cellphones). Some interviewers were paying attention, though.

I did an internship during the summer at Google. At the end, I asked for conversion and had two onsite interviews. After the interviews, my interview feedback as well as my internship feedback went to the hiring committee, and then I got approved.