When a discussion starts in the comments, it's not easy to open a chat room and copy all the comments to it. It's easier to wait for that message about "moving the conversation to chat", that does this automatically.
But we are always being reminded that "comments is not a space for lengthy discussions", but nobody seems to have the patience (or time) to opening chat rooms, copying/pasting the messages (with respective authors), and finally putting a link in the original thread, not to mention erase the comments later.
So, I suggest that a link to move the discussion to chat should be available (maybe as an icon) since the second comment (or something like that).
What do you think?