AppDynamics interview questions

Good initial interview with HR, then they scheduled video call with manager. Interviewer arrived 15 minutes late and when we had technical difficulties with sound, he walked out of room without any comment and never returned. Called HR and reported experience. They apologized and re-scheduled video interview with same person. Interviewer was a no-show. At this point, I determined the position was not worth pursuing and did not contact HR again. I received a reject letter email a month later.