Way to make vertical "comment" line?

Hi, I was just wondering if there was a way to make a vertical line run from one paragraph (indented to the left) along the outside of subsequent paragraphs (indented to the right) and then meet up with a paragraph below these (also indented to the left), so as to show the relationship between the first and last paragraphs which are indented at the same level, but separated by space. Like the kind you see in comment sections that have various levels of replies and vertical lines to help the reader follow what is being commented on and by whom. Any help would be appreciated. Thanks.

Sorry, no, this isn’t possible.