Agreed that Madonna was very awkward - I think she just doesn't like doing interviews because she is guarded. But as you said, this is Graham and he always makes sure his guest are comfortable. And he does get the big names on his couch that rival Madonna in terms of fame. However, I'm guessing Madonna did not know his format or she would never have worn what she did! Why would you wear that to a sit-down interview?? And she didn't have any cute stories ready to tell like other celebs do. She was dressed to perform, not talk! I feel like Madonna thought this was just another dumb interview to promote her new album and didn't realize Graham is different. Go Graham!
In terms of my mother thinking Madonna was on drugs, she thinks everyone is on drugs or drunk that can't hold a conversation. Funny considering she never caught me in my college years