Techstars Business Associate interview questions

I was invited to apply for this position after I had done a volunteering project for Techstars Toronto. There were three rounds of interview: an initial 30 min screening call, a 30 min video interview with a Sr Program Manager from the US (standard behavioral questions + experience), and finally an onsite interview. While the first two rounds went as a normal job interview, the third one reminded me of the Monty Python's Silly Interview sketch, the one in which John Cleese rings a bell and sings "Gooooodniiiiight!" to a flabbergasted candidate: clearly, there was no hiring intent but plenty of mixed signals that made me feel awkward. After three weeks of radio silence on the interviewer's side since the second round, he requested that I come for the onsite interview the day after, insisting that he had no other availability. I had a surgical appointment scheduled for that day, but, to accommodate the request, I managed to reschedule it. When I came to the Techstars office, the interviewer had no questions for me and didn't seem ready for our meeting at all and, five minutes after the interview had started, he stood up and left the office under the pretext that he had to...prepare for the interview with the next candidate.:-D I wonder if the interviewer did that because he enjoyed embarrassing candidates the way John Cleese's character did, or just due to his sheer incompetence.