Everything went very well with the interview process. The company always got back at me within 48 hours. I went through all 5 stages of the interview process, but got rejected in the end. It was a very lengthy process, which is somewhat understandable given the position I was applying for (10+ hours of preparation + interviews). My only negative point was that I received some feedback about not discussing enough alternative solutions during the Case Study interview. I believe I made an effort to do so but there didn't seem to be much interest from the interviewers to do so, nor was this very clear from the way that they have conducted the interview.