Amazon Non Software Development Engineer interview questions

I was contacted by a recruiter first through email. After a phone call with the recruiter, he put me in touch with Amazon's recruiting department. Through them, I set up an hour long phone interview.

My interview experience was unusual. I was put into a group with two other candidates, and we were given 6 hours to complete a programming task. We each had a one-on-one chat with one of the interviewers, but it only lasted around 15 minutes (the main purpose was to for the interviewer to understand who was responsible for each part of the code we wrote). At the end of the session, the interviewers collected our code. This code, the 15-minute chat, and any observations of our problem-solving skills, appeared to be the only takeaways for the company to base its decision on.