TikTok Backend Engineer interview questions

Recruiter reached out and then scheduled an interview, interviwer asked medium leetcode question and left in the middle of the interview and came back said the interview is done even though I had a solution ready, got a rejection letter the following week.

Applied on LinkedIn, and the recruiter emailed and said I was a good fit. Proceed to a phone interview with the HR asking about basic behavior questions, then on the same day, a technical interview question mainly about past experience and gRPC.