Amazon Non Software Development Engineer interview questions

Recruiter reached out to me. First round was an online assessment - 2 questions - 90 minutes. After a successful online assessment, I had 4 rounds of virtual on-site interviews. 3 were based on algorithms and problem solving. 1 was behavioral.

Was smooth so far. Delayed responses but not too much. Applied in August, went through in September. Got rejected after the technical interview. A lot of friends got questions like palindromes and etc. from a bootcamp student recruiter, which are 6 lines of code, literally. I did not have such luck. Got a breadth first search problem which I solved, but not efficiently. Probably the reason why got rejected.