I would think that the coaching staff started working on a Dallas game plan yesterday or today. And it is a division rival that they see twice a year (three times last year), so it’s not like they don’t already have a good idea of what they want to do against them. It probably will be somewhat harder in terms of being physically ready to play, though.
Good thing Philadelphia had the advantage by the postponement. they might have got blown out by 30 points.