How to Access Audio Versions of Newsletters: A Guide

This feels like a silly question but how do you actually listen to the newsletters? I always enable "audio version" in my newsletters and I pick my AI voice and everything, but when I click the "listen online" button from the email newsletter in my inbox, it just takes me to the web version of the post. No CTA that I'm seeing that would enable me to listen to the content. Am I missing something?