Podcast player caches (store) your feed data to improve website loading performance. This feed data is automatically updated after every 12 hours. Therefore, all changes made in the podcast will be reflected after every 12 hours in podcast player.
However, You can easily control this update behavior in two ways,
Manual Hard Refresh
If you immediately want your feed to get updated. You can do hard refresh manually.
Reduce automatic update interval
By default, podcast feed data will be automatically updated after every 12 hours. However, you can change this duration from 12 hours to anything that you want.