So im supposed to attempt to save captain curnow, but every time i enter the meeting chamber, the high overseer and the captain would talk normally for a few seconds, and then they would both rush downstairs. And several seconds later, i would get the notification saying captain curnow has been saved, and the high overseer would walk back to his secret room.

I didnt do anything after opening the door, both of them (including the 2 guards) just ran out

Is this a bug or something? I didnt trigger any alarms or get spotted or anything.