TikTok Software Engineer interview questions

Approached by HR. Two rounds of technical interview (online). Both interviews were about past experiences and asked specific questions about the tech used + 1 medium LC question in each round. The first interview was ok, although for some questions I'm not quite sure, algo AC. The second interview was bad/terrible, the interviewer could not give clear instructions and kept interrupting while I was speaking. He asked to go through certain things but then interrupt in the middle and rush to the next question. Algo AC but he doesn't seem to care. Overall a waste of time and effort, the feedback is total non-sense from the HR. If you do not want to hire then don't keep approaching people to waste their time.

Technical phone screen. Leetcode easy and I solved with the accepted solution with test cases passing. However, I was still rejected? Not sure what they were looking for in this interview.