Amazon Project Manager interview questions

I interviewed for the role of Product Manager - Customer Insights. The interview process was generally quick and with a clear path. They do not make you wait for a long time in between different interview stages, and got back with a decision fairly quickly. I was approached by HR for an online assessment and then a phone interview with an existing Product Manager. The interview took about half an hour, and I did not make it past that round. The interviewer was kind and friendly, despite the questions being on the tougher side.