Amazon Senior Software Development Engineer interview questions

A recruiter contacted me and asked me if I was interested in the position. I said yes, and quickly they sent me an email asking me for free spare time to arrange an online interview. They also sent me some general tips to prepare it. I prepared some past situations that happened along my career before the interview. The day of the interview I had a video conference with a Senior Manager. The person was very polite, everything was fine, and no pressure at all. The problem was that none of the scenarios I prepared were close to what the person asked me, so may be I had to improvise too much. After one day I received an email telling me I was not going to continue the process without any feedback. So since I had the recruiter email address, I asked her for some feedback to do it better in a near future, but she told me that she couldn't give me any feedback because it was an Amazon's policy.