If I'm making the right guess I'm thinking you're talking about the C2E2 GANG-GANG thread that midwest-regiment channel has/had for C2E2. It's just a discord thread that was started off of a particular post. They'll pop up from time to time (albeit not often in the 405th discord) in various channels, but aren't channels in and of themselves, and don't tend to be long-lived. They serve more to keep a conversation going without cluttering the channel. As far as I know, each group attending any given event have opted to do things differently.