Amazon Business Analyst interview questions

3 phone interviews on two separate days. The first and second calls each had a case-like question that tested business acumen and the final interview primarily focused on experience with about 4 specific questions on advanced excel functions and basic SQL. There was also a written case study to submit prior to the second set of interviews. My impression is that interview experiences very dramatically from interviewer-to-interviewer. Based largely on my interviewer's tone, I didn't expect an offer. To my surprise, I got that phone call about 7 days later.