A new system for moving comments to chat [has been implemented](https://meta.stackexchange.com/a/237976/156248). Basically, posts are auto-flagged if there are too many comments, enabling mods to copy all comments to a new chatroom (and then spend some time deleting what doesn't belong on both side [sic]).

While this system is less than what you could hope for in several ways, one thing stands out: "many" is defined to be twenty.

I don't think this is a good threshold for cs.SE; we have far shorter series of comments that I'd like to be able to move to chat, in particuar meta discussions that don't warrant a Meta post.

Shog9 from SE has [proposed](https://meta.stackexchange.com/questions/93444/provide-a-tool-for-moderators-to-migrate-comments-to-chat/237976?noredirect=1#comment780398_237976) we collect discussions we would like to (have) move(d) so we can figure out what a good threshold for our site is.