2-3 hours multiple panels from different departments. Some were nice and some were very serious. After the interview never heard from them again. So I just assumed I didn’t get it.

HR phone screen, hiring manager phone screen, then flown in for an on-site interview. During the interview, some of the employees seemed unenthusiastic about working there or uninterested in myself or the interview process (one yawned when I was speaking with the other employee in the interview pair). One employee did not seem to understand a project that I worked on and I tried to explain as best as I could, but after about 15 minutes, she simply concluded "yeah, I don't think it's going to work." It's possible that I wasn't an outstanding candidate or wasn't doing well as an interviewee, but as the interview went on, I didn't feel that I was getting great feedback from some of the scientists and was becoming less and less interested in joining. Perhaps that was picked up on, because I did not receive an offer, though I did not think it was a good fit anyways. The hiring manager, however, was very friendly and clear about the job and expectations. There were also several scientists and group directors who were also excellent and answered and asked great questions.