Just had a thought pop into my head, not sure how possible it is.
I run a forum based on first person shooters, I have some forums dedicated to certain FPS games. I just posted a new topic titled "Terminated Halo composer's music still remains in Destiny, says Bungie".
This topic related to both the game Destiny and Halo, however I had to post it in just Destiny to avoid duplication.
Is there a way to make it show in both forums but both containing the same replies etc?