Amazon Software Development Engineer, interview questions

There was a phone interview first. There were three coding questions and a behavioral interview using an app called Amazon Chime. I got rejected at that stage, so I don't know what happens after that.

There were 4 hour long interviews in a single day. 3 of them were technical interviews while one of them was a discussion about my experience/situations in the workplace. The last one was a Bar Raiser interview, which is a very difficult interview; I didn't solve the problem they gave me but I still got the job.