The transition from reality to dream takes Glacius completely off guard—it is not the shift itself that does it, though. Their close physical proximity and moroever their Bond has allowed the ice alien to probe his partner's sleeping subconscious a couple of times, now. Rather, it is the transition of his self from one form to the next that scrambles his brain and leaves him staring dumbly for a moment; his dream-walking has always allowed him to visit others, not to become them entirely.

Being an alien with a very different physical form is bad enough; it does not help that he has none of Carlisle's knowledge or even his memories. Glacius is finding it incredibly difficult to adjust when he cannot even parse why this has happened, so he just stares back at the man before him, not sure what he can even say in this situation.