Not even pathological though - exhaustion will do this. I used to be so tired (life situation exhausting) and more than once got up to pee in the night, sat on the toilet but was not completely convinced I was awake not dreaming so couldn't pee. Dreams intruding on that barely awake state is, I don't want to say normal, but not unusual either.

It never happens now I am better rested.

If it happens once, it’s most likely self-suggestion