I found a couple of possible solutions to this problem.

The first one just kind of divided things up a little better by adding borders between comments. It's a small change but it made a big difference, imo.

But that only took a second to do, which is why I did it at all. I spent the rest of them time trying to figure out how to split up usernames from the comments, and I think I nailed it. This option makes the whole timeline look a little different, though.

Let me know what you think about these! Thanks!