It appears that the inner room was soundproofed and so the people in it could not hear anything going on outside the room until Jason and Berlin knocked on the door.
"I think you guys should say the word, de la mare, when you are asked any questions." One of the workers whose hands were raised sputtered immediately to inform Jason and Berlin. Jason and Berlin looked at him immediately and back again, they concentrated on having the door open up to them. It looks like all the workers in the hall were all of one mind because none of them countered the words of the guy who just spoke: to them, Jason and Berlin were here to rescue them from a thought slavery task.
