User blog comment:Juan Jose Rodriguez/Gwen and Duncan - Why Do You All Hate It?/@comment-5928665-20190509130023/@comment-4742462-20190509132324

Gwuncan wasn't enforced upon them by the higher-ups, only the breakups of Gwent, Duncney and Ozzy were.

The writers came up with the idea to make Gwuncan canon on their own, and even with that Tom was initially cold footed about the idea.