RSS to the rescue :D
https://3speak.tv/rss/cttpodcast.xml
it does not look nice but you can download episodes (it looks ok, just no one had the time to fix how it shows thumbnails :) )
you can just scroll down and at the end of every episode you have a Download episode link (it is a bit small so easy to miss)
Thanks Bill! It doesn't need to be that fancy as I was most interested in just getting the audio recording so I can extract the transcript with an app like Premier Pro.
It's good to know that the download button exist! 🙌🏼