It is a long interview process, taking a half day or one day to complete. You need to pass at least 5 interviews on the same day. They are using behavioural kind of interview techniques

I contacted by 7 different people, no one knew what the other was doing, none of them could thoroughly answer my questions. They seemed robotic and cold. They didn't listen to me when I said I needed time in between sessions, so I had 4 hour long interviews with no break.