Cerence AI Manager Software QA Engineering interview questions

Had 1 round of interview only where first 35 minutes were Technical Discussion and 25 minutes of Managarial. It was mix interview with different interviewer. The interview was started on time and had very good converstation at starting. After that, I am not sure if Manager was checking my petience as a interview process or she was actually rude. Otherwise everything was happened very smoothly. Unfortunately, I haven't cleared it though I was able to answer questions and could able to talk with confidence. Agree, not all quenstions are answered but had confidence that I cleared it. Expected exact reason for rejection and requested HR to provide me the same but all HR's are same.