Ok I want to finish "Blind Betrayal" so I need to confront Danse at Listening Post Bravo. However Danse isn't there, Danse is at the Castle.

The problem is that as soon as I go to the Castle, the "Defend the Castle" quest automatically starts.

Since that quest means the Castle is attacked, I can't talk to Danse because he is always in aggro mode until the attackers have all been killed.

When the attackers have all been killed the "Defend the Castle" quest is completed, and that makes me automatically fail Blind Betrayal because it thinks I want to do the Minute Men end quests instead of the Brotherhood.

Any solution?