Jellyfin foz Android TV - Unable to connect

[shadow82]

ok. changed the port redirection in docker-compose.yml file to: - 8082:8082 and in jellyfin config.
No change after this one.

I have a drawing here: https://imgur.com/qbDZkZo
It shows which client flows work fine and which doesn't
FW listens only on port 443. The rest of types of clients (Android app, Win11 web browser, LG WebOS client) work fine using the same way

Here is wireshark dump when connecting to tv.acme.com (and it doesn't work) https://imgur.com/bT2GZcE
Here is wireshark dump when connecting to demo.jellyfin.org (it it does work) https://imgur.com/zhQns8g
Here is wireshark dump when connecting from my Win11 laptop webbrowser to tv.acme.com (same Wi-Fi) https://imgur.com/hHQFOcV
Here is wireshark dmp with the same laptop connecting to demo.jellyfin.org https://imgur.com/45BgbqE

I think the only bad thing here are 50% of retransmissions when connecting from Chromecast 4K, but if:
- I'm getting them only when using Chromecast 4K
- There are not retransmissions when connecting from my laptop
- Other clients works fine both via home LAN and Internet except Jellyfin for Android TV

Then something must be wrong with that client or Chromecast 4K is poor network endpoint...