Uber Operations Manager interview questions

Interview process was long. I was asked to prepare a a case study, for which I dedicated a whole week. I got told that my solution is excellent and got invited to a final round. After the final round they rejected me saying that my case study solution was not sufficient.

I got two rounds in three weeks time. The first interview was with a in-house recruiter, the second interview that was with the line manager, I failed the second interview.