Went through two rounds of interviews over skype. The first was a general "get to know you" interview and was very positive. The second interview was a mock mathematics tutoring session and I thought it was less professional than I had hoped. I explained the sample question to a guy sitting on his couch in what I presumed was his house. It was hard to take it seriously. I clearly explained the background of the question and the mathematical ideas behind it. After explaining it, he told me he was apparently looking for a more "quick and dirty" method of solving it. As someone who has taken multiple entrance exams and placed in the high 90th percentile, I personally disagreed but acknowledged what he was saying.