During 'head-to-head' comps, I can send comments to the other player by using the square white box (with ellipsis) at the top of the screen. When the winner has been announced, a message appears at the bottom of the screen 'Chat will close in ** minutes' (or words to that effect), but the dialog box disappears and I don't see how to chat to the other player. I'd just like to say 'well done' or 'tough school' or whatever . . . how can I do that?