Having some sort of server level control for reducing time between episodes would be great. I believe on Apple TV it is around 15 seconds.
With auto-play enabled it should be 15 seconds in all clients.
There’s an existing feature suggestion asking for an option to adjust that countdown. I suggest you comment/vote in that thread in order to avoid distracting/dispersing votes.
I’m therefore going to close this thread.
There’s also an existing suggestions to have a toggle for the countdown (option to disable it and immediately jump to the next episode):
2021 clean-up: duplicate