LinkedIn Software Engineer interview questions

I first got a phone screen with a recruiter who explain the interview process. then the recruiter emailed me with the next steps then two back to back technical interviews with different sets of software engineers they were fairly nice

Had a normal assessment test on datastructure and algorithms. Then had a phone interview with the recruiter And lastly was a video live coding interview with two engineers in Linkedin. I answered all the questions correctly but I still got a rejection with no reason why. The Asian guy really tried to make it difficult for me but I still answered it, yet got a rejection. I really don't think they were looking for knowledge only. I don't know what exactly they want, but I got rejection. However, the recruiter was really really. She took time to encourage me to apply for more roles and really kept it professional. Thumbs up to her.