Okay then the Penguins aren't going to trade Pettersson to you.
The point is that the Penguins aren't going to trade Pettersson in the division without a massive overpayment.
I don't believe as a blanket statement. There are certain teams that I think likely won't work often together (devils / rangers, Calgary / Edmonton), but I don't know that Pens / Devils are one of them. Fitz clearly hasn't had an issue with trading inside the division (including Pitt previously) and Dubas hasn't shown a predisposition to avoiding trades within the division as far as I am aware (and obviously just moved Guentzel to the Hurricanes)
IF the trade makes sense for both sides, and the Devils were to have the best offer, I don't think there's much more to it than that.