It's not uncommon for me to post an answer that ends up being below the highest-voted answer. To some extent, I can assume we all relate.
I've noticed that when I have such a post, high-reputation users tend to use my lower, less-visible answer as a chatroom of sorts. An example occurred on the notorious "What does covfefe exactly mean" question.
Honestly, I have no problem with having my answers host a discussion, even if it's unrelated to my answer. Please don't change your behavior based on this curiosity-based question -- but it's happened to me before as well.
That high-rep users are doing this suggests to me that there ought to be an easier way for users to ping each other for conversational debate. Is this a common practice employed as a work-around for the lack of private-messaging on the site? Or have I just happened to see this on multiple occasions on my own posts?
What is the best way to reach someone for this kind of discussion? Will they hear you if you ping them on the chatroom? Is there a best practice for trying to reach a user for conversation without drawing public attention?
Also, someone recently flagged my attention by tagging me in a similar manner on meta (on someone else's answer, because I had deleted my own). Then I found those comments (including my own) deleted. How does that process work? Who decided to delete those comments and how did it happen?
EDIT: I may not have been clear about my actual question. My ultimate core question is, What is the best way to get in touch with someone for a brief discourse not intended to be permanent? I've seen (mostly high-reputation) users commenting at each other for attention, and then deleting all their own comments shortly thereafter. People have sometimes commented on very old questions I've posted to get my attention, and then deleted those comments (and I followed suit diligently). Is there any clear-cut way to get someone's attention outright, apart from commenting at them on something that might not be related to the discussion at hand?