Cockatiels can get night frights and actually die from them. I'm glad you will research some more before you get one, being in the same room as the snake is a big no no. Cockatiels need to be with the family so the living room or family room are good spotsI had that same thought
The snake tank has a heating pad on one side that blocks view. And I would definitely make the cockatiel cage snake proof.
He has escaped three times because he can push the lid open, so I'm definitely considering a different spot.
I tried to feed him a live bunny once and he was scared half to death by it moving.
Also, he's only active at night, I can't get him to budge during the day
So the cockatiel probably wouldn't see him.