Interviewed with one manager and later with 2 senior managers on a different day. They were all very professional and well organized. The manager was relocating to another office and they were looking for a replacement,

I had previously worked for the company, then left for about a year. So this interview consisted of lunch with 1 person I had worked with previously and the person that was hiring. I was asked the usual interview questions about my goals, past experiences, etc, but in a less formal setting.