I love how the one game where this would make sense, FEAR (where the enemy is a clone army controlled by a single psychic commander), is also famous for how well the AI communicates with each other. They shout out detailed tactical chatter and announce their current moves even though it's pointless due to them all sharing the same mind.

And if they have some kind of shared vision because of technology or telepathy, then make it hurt them them when one goes down.

Or make it make sense, like they have to spend a turn to contact the others, or they shout to alert other NPCs, but that just means there know there's a threat in this general area, not "we now have magic GPS for the next five minutes, and then I guess it must have been the wind."

Are there any good examples of AI in games that do the opposite of this? Off the top of my head, pretty much every game works like this, I imagine having every NPC having its own vision & memory would become very complex to manage.

I could understand it if the enemies communicate somehow, like relaying your location