RELX Analyst interview questions

I don't know if this is normal for this company but I interviewed with three people. The first two who I would have been directly working with were ok and understanding. However, the last person whom I talked to which was the Finance Director who was extremely intense and asked some of the hardest questions that i have ever been asked on a interview. But, when I asked her about the position she didnt have any knowledge of what they do in that department.