A week before the scheduled interview I emailed the recruiter who set it up asking why I had not received any details about the interview. The next day I sent another email asking the same thing since I did not get a response. The recruiter finally answered that there was no interview but she would recheck to see what was really happening. At the end of the day I received a phone call from an embarrassed recruiter saying that the interview was actually on and that she was sorry for the mixup.
The day of the interview there was a presentation of the company benefits. Then I had three separate interviews. Each was a relaxed conversational interview. Each one said that my background was exactly what they were looking for. At the end, after several remarks about my age, I was told that I was overqualified.