I got a referral for a position for a research position. I did the first stage of online interviews and the second stage of on-site interviews. Eventually, they chose another candidate who had worked with them previously. However, the hiring manager seemed really sorry and since my interviews went great, they referred me for a computer architect position in a different team. For that position, I did not even pass the screening interview and I got rejected with a copy-and-paste email, even though, during the interview, the other hiring manager mentioned the possibility of skipping some interviews (since I got to the final stage for the other role). Rather weird behavior.

Four 1-hour phone conversations with research team members and 1 hours web presentation in front of research team members. Conversations were scheduled one after another. It all took a little over a week.