I was located remotely. One round of HR + One round with hiring managers ( 2 of them) + 7 rounds of in person interviews. The actual interviews were not very tough since I have relevant experience. Hence was able to talk about the process issues etc demonstrating my knowledge. Back to back 7 hrs in one day was exhausting with you locked in one conference room and the next interviewer waiting to start before you are done with the current. Over all it was a good experience and I took the job.