Query about Fully Kiosk and using streaming apps

Hey folks, just starting out on HA but ideally the end goal is to have a wall mounted Fire HD 10 with a HA dashboard in the kitchen. I’d also like to be able to use Netflix, Prime video etc on this device and then have it return to Fully Kiosk automatically when I stop streaming.

I’ve had a play around with the settings in FK but the only one that seems to prevent the regain focus timer is the one for detecting audio playing. Unfortunately this doesn’t seem to detect when audio stops playing, at least not in Netflix, as focus is not regained after pausing.

Anyone had any experience with a setup such as this?