Both interviewers were quite nice and the interview session, itself, was very open and relaxed. They expect you to talk - a lot, which I liked, and, therefore, the interviers kept the questions to a minimum and stuck to very broad topics. Although, prior to the interview, you are told that the interview session will take 30 minutes, it seemed that, at least with the morning session, there was at least 45 minutes scheduled for the actual interview. So, say a lot and have plenty of questions handy.