JavaScript UI event for when replies/comments have loaded?

We're writing some code that needs to run when content is displayed.. we can hook into the generic pageLoad event for the main body of a particular page, but it's problematic for the replies/comments which are ajax'ed in after pageLoad.

Is there a front-end browser event that fires when these replies/comments are loaded? I've looked into the Client Messages but there's nothing there that helps; https://community.telligent.com/community/11/w/api-documentation/67096/client-messages