no it do not work like DMs, it’s an ask system like tumblr so I’d be making a post with your question fully visible
To answer your question no I have not yet
I only used the ask function because I didn't want to go find the comment again and make another comment under those comments making it progressively narrower until it was a Babylonian tower of singular characters.
Unless that's been fixed. I've been working too much to keep up with CoHost development.