Amazon Area Manager interview questions

I was contacted through a recruiter and they setup a phone interview with an Amazon HR type. This was just a basic phone screen where they ran through my resume. The recruiter then called me to setup a second phone interview with the DFW site leader and that went well enough for the to fly me in for a face to face interview. My time at the DFW site began by handing paperwork in to the local HR rep and I was then taken on a tour of the facility. After that I had to solve an operations type math problem which was pretty easy and I then had an hour long panel interview with the Site Leader, Sr. Ops Mgr., Inbound Ops Mgr, and an HR type. I felt the interview went well enough and they said they would get back to me in a week. Well a week came and went and two weeks later they called me to tell me they chose another candidate. The other thing they had me do before the interview was answer 4 case questions. The thing that I really did not like was they didn't adhere to their timeline and they offered absolutely no feedback on the process. Its disappointing that it did not workout, but it is their loss and I will find something better