User blog comment:CheeseBurgerGuy/Total Drama Theory: What If Gwuncan Was In TDI?/@comment-4400695-20191018194134/@comment-35606925-20191018203536

Yes and no. Cody will be a little more receptive considering Duncan wasn't with Courtney before he and Gwen hooked up. However, Cody is still going to be unapproving since, unlike Trent who was a friend (in canon) and a generally good guy, Cody has a poor opinon of Duncan.

Basically, he doesn't want them to get together but has no reason to actually hate Duncan.