Projects and Chats (Newbie question)

Hi, I've been using Codex for about a month now to make games for personal use. I was wondering if there are any "best practices" for using Chats within a Project. Up to now, I've just been developing the whole project in a single Chat. But would it be better to use different Chats for different aspects? - Like, one Chat for any development of the user interface, another Chat for game mechanics, etc? Or doesn't it matter much? Thanks.