I recently had a group interview with about 10 interviewees and one interviewer. We all sat around a long table and answered the same 3 questions one at a time. So assuming each person spent 3 minutes per question, this is 9 minutes per person talking out of 81 minutes of other people talking. This does not include the time the interviewer spent talking about the company. We didn't really get a chance to ask questions.
What is the point of doing the interview this way? It seems to take a lot more time from the candidates and does not save the interviewer any time.
I had been to a less formal group interview before. People would mingle with each other and one of two interviewers would take 5 minutes to speak to each candidate individually. I guess in these situations they could observe how well the candidates could form connections with other people in the room, but this certainly didn't happen in this one where we all sat and listened to a lecture.