They have both said they were there when she was found unresponsive. Each has given separate interviews, not naming the other one. Taz gave an interview to ET and Brigitte Neven and Eric Gibson were interviewed by Rita Cosby on MSNBC.
When each tells the story, the other one is not in it. When Moe has told the story in the past, he has never mentioned Brigitte being in the room, only his own wife, Taz.