The scene I'm refering to is the one which occurs right after Zaza tries to whack Vincent. When Connie and Vincent try to tell Michael that Zaza needs to be taken out he turns and looks at BJ who then leaves and only then does Michael begin to explain why Zaza is not a threat. As for her not being involved in family business, if that's so then why does Neri accept her go ahead on the Zaza hit? And why does Michael allow her to stay in the office during the whole ear biting affair? He knew what was going to be discussed. If Connie wasn't involved he would have told her to leave. He wouldn't let Hagen stay for the discusion with Ola in Lake Tahoe to demonstrate that he's not involved in family business. If the same were true of Connie I think similar action would be taken.