I had two interviews and a case study before my process ended. I was interviewing for one position but then all of a sudden they told me I was interviewing for a different one which was very confusing. The case study was a machine learning problem. I never got feedback for my case study. Also, I got very positive feedback from my interviewers, and the next news I got was that I wouldn't be getting the position. I followed up to get feedback on why they ultimately decided not to give me the position and they did not respond.