Amazon Software Development Manager interview questions

Phone call with Director. Went so well ,they skipped a follow up screen to fly me up. Before flying up was asked to write an 3-4 page essay. The first interviewer was 20 minutes late. Yeah, I sat waiting for 20 minutes. He didn't seem prepared and didn't take any notes on his laptop, asked me the questions but seemed to be checking his email. Was taken to the wrong room then twice. Had someone interview me I could barely understand his English, but worked through it. Then to a video call with a Director from NY. I thought this was a test to see how I'd handle someone being extremely rude and off putting, because he was intolerable but I took it. This continued through the day. At every point, I asked every interviewer their previous job, and background. Most had less experience than I did, maybe one was comparable and he was the Director. It all felt good, but honestly the vibe there was pretty bad. I know it's meant to be impartial but it isn't. Don't fool yourself. So 1 week goes by, and I finally email them and get a "we said no but we can't say why". So, for a "customer driven company" to waste so much time of candidates and not way "why" is insulting our entire industry. And, further it's just not true. Former friends at Amazon say that is just a BS line and I agree. 2 years ago, I interviewed for a different role and had TWO follow up calls on the reasons why which were technical based.

Mostly questions on scenarios and how I handled them. Questions on people development, project management, customer success, hiring and developing junior engineers, going across boundaries for customer success, everyone was very professional, only distraction during the interview was they were typing their feedback right during the interview and were quite apologetic.