Yes, you go to Romo at halftime if Dak is struggling. With that said though i don't expect that to be needed.
Bingo...I'm so tired of people worrying about it being "Daks team" or "Romos team". Its the Dallas Cowboys, not just a QB.
This time of year I could care less about anyones feelings. The Cowboys have an advantage no one else has (besides maybe NE) with the ability to win with their backup QB. Why not put all of the options on the table?
With that said I would be shocked if Dak had another performance as bad as against the Giants game. That was him at his absolute worst, and it wasn't all on him. Poor weather conditions, Dez was basically just a warm body on the field, etc. I think that game was a worst case scenario for this offense.