You can invite someone to a private chat. I can't recall right off if that can be docked or not to make easy to view a game in progress.
https://support.chess.com/customer/en/portal/articles/1444852-how-do-i-chat-with-other-players-in-the-live-chess-
Hello,
Is there any way to chat with a specific player? Also, is it possible for a player to observe another player that is examining?
For example, this would be the equivalent to me matching myself on ICC, and then another user observing me, with the Chat window.
It looks like here I can form a "group", and that other person can join the Group, and then on Live Chess choose that group to chat, but that just seems to allow said person and myself to chat. There appears to be the following issues:
1) How do we keep others out?
2) Is there any way to observe a board that one controls while chatting?
In other words, it would be like 2 people trying to study the Accelerated Dragon on here, or examine a game that one player or the other played previously over the board.
Is any of this possible? Or is the only way to chat with a board up with a particular user via getting lucky and happening to face him in a rated game?