I was interviewed twice by HR and a few other times by several team leaders, directors, and BU manager. Each interview lasted 45-120 minutes. Some interviews were on the same day and some on different times. I had interviews on the phone and face to face. Most interviewers asked questions which were relevant to the job. Two just seem to ask what they were expected to ask and were not very effective, or the topics were not related to the job. Overall it was a productive process and not absurd as some interviews can be.