In my own little headcanon that I 100% believe in I think Daniel disassociates when he becomes overwhelmed or it is too much for him to handle so his brain locks up.
To me the most obvious example is the two parters āOut of mind/ Into the fireā where Hathor captures them. I think he is partially out of it the whole time they are there.
I think he only becomes aware when he is kneeling in front of the Stargate and Jack comes out of the forest and starts yelling nonsense trying to act like a goaāuld and he looks up and says āJack?ā
And also the episode New Ground, that boy was so far gone in that episode he was like a zombie.

















