Here the most used questions (https://igotanoffer.com/blogs/product-manager/amazon-product-manager-interview).
The key to succeed is to understand each principle, separate examples then, train with the questions.
Unfortunately, the Hiring Manager was busy then the human resource asks for another person in HQ to do the interview.
Pay attention to share a more flexible agenda for the interviews. I had a lot of appointments and I was a little bit restricted.
I'm from Brazil and the interviewer the call quality was not fine, so much noise and delay. It keeps failing, the interviewer connects almost 4 times during the whole interview. By the end, the English-Indian accent of the interviewer and all those difficulties makes things really difficult, not the principles at all, because I had all examples, cases, and ways to demonstrate. Despite I can talk in English well, all these things together made me fail.
More 6 months, and I'll try it again. :(