Oh, this forum is full of surprises.
But that's actually rather hidden and somewhat tedious to do. First you have to click on the little arrow, then on one of the users that commented, and then you have to click both the show hidden comments tabs. It would be nicer to just click a "show replies" button to see the full list of replies. If you could click it without first hitting the little arrow, that would be even better.
Also, there's a problem with the current system from when I looked into a couple popular art blog topics. All replies are being connected to the top level post, even if later on down the line there's a reply to some other reply, or a reply to a post. Clicking "reply" to a topic doesn't create a post which can have its own replies tracked the same way as the initial post.