Hello Connollyg,
It seems like your created stations aren't able to play your podcasts one after another since the iOS 16 update, right? Does it happen with a specific station or this is the same behavior across all your custom stations?
If you haven't yet, you can try to create a new station and put the same podcasts in there to see if it'll play through. You can follow the steps here:
Organize your podcast library on iPhone - Apple Support
"Create your own station
Group your shows into stations (similar to a music playlist) based on themes like news, comedy, or morning commute podcasts. Episodes from the podcasts you choose are automatically added to your station regularly.
- Tap Library, then tap
in the top-right corner. - Tap New Station, then add a title.
- Tap Choose Podcasts."
Regards.