Amazon Sr Developer interview questions

I was contacted by an Amazon recruiter and had a first phone conversation with the recruiter a few days later. The recruiter said they'd skip the online assessment due to my experience level. Instead, they directly scheduled a phone interview a week later. Just a few hours after the phone interview, I got a positive response and an invitation to come onsite. Scheduling the onsite was a bit chaotic. First, there were several days of delay in getting the confirmation. Later, the recruiter called and said Amazon would have to reschedule, so we informally agreed on a new date. The formal invitation for the new date only arrived on the day of my interview. A day after the interview, I got a phone call by a recruiter saying that Amazon does not want to make an offer, that I could apply again in 6 months, and that Amazon has a policy of not giving any feedback. While I generally enjoyed the onsite and thought things went quite well, I can only rate the experience as negative because Amazon refuses to give any feedback. Searching the net reveals this may indeed be a company-wide policy. Ironically, Amazon expects feedback to flow in the other direction, as they do send out surveys to candidates.