Post History

Notifying each other that a comment issue is resolved, to produce fewer comments rather than more

I just made a comment on another Meta post because I wasn't sure whether something in someone else's answer was a typo, or if so what the correct wording should be. It turned out that my best guess was correct, and I got a comment in reply to that effect (along with the author editing the post).

I figured at this point that I should delete my own comment, as it has served its purpose. But now I see a problem, that applies generally.

Presumably, me deleting the comment doesn't send any kind of system message, so now the author's "thanks, you were right" comment is orphaned. I could flag that for removal, but it seems heavy-handed to involve moderators for something like that. On the other hand, commenting in order to convey that I deleted the first comment and that the whole thing can be cleaned up now, is... clearly counterproductive. I can imagine this getting out of hand in extreme cases, like the classic "no, *you* hang up" routine.

Is there a more streamlined way we could handle these kinds of situations?

(Also, just to make sure: will a comment thread disappear from the ordinary-user UI, if every comment is deleted from it?)