And then you are in the wilderness. At some point you encounter a dying Ilithid with 3 charmed people. They stop fighting in the second round. Then you can approach the Illithid. And you have to pass 2 "rather" difficult (both times 14) checks one for wisdom and one for int to not die and kill the mind flayer and... are rewarded no exp for that. So, totaly pointless (btw no skill check so far rewarded anything).
As a wizard I straight up fire bolt the thing and as fighter I ran up and attacked the illithid without interacting with NPCs...
