So whats with mobs psychic link?
So i'm sneaking around a spot and its filled with gunners. I'm fine and behind something. A ghoul attacks me so i killed it with melee but i'm still in danger. Turns out somehow the gunners off in the distance where alerted to my location cause they somehow saw me cause the ghoul could see me. So when one thing sees you they all see you. Even when you're behind stuff. So i get things lobbed at me like rain of grenades since enemies have infinite grenades but once the ghoul died they all stopped.