It depends on the Mod. Not even the mods know who the other mods are - unless you are JohnD (admin).
I'm sure they all know each other. Almost all chat forums have a hidden "Chat room" or "Private room" where mods can discuss things like annoying people (Joe ) . Also, deleted threads can be moved into these hidden sub-forums.
Don't forget people, the Mods aren't getting paid for trailing through the mass shyte that is General Discussion so give them a break once in a while.