Steam remote play together not working between steam decks

[durtroSC]

Your system information

• Steam client version: 1728093750
• SteamOS version: 3.6.17
• Opted into Steam client beta?: Yes
• Opted into SteamOS beta?: Yes
• Have you checked for updates in Settings > System?: Yes

Please describe your issue in as much detail as possible:

Tried to use steam remote play together between 2 steam decks, one 512 OLED and one 512 LCD. Tried several games like Aeolis Tournament, A Hat in Time and Kingdoms: Two Crows. In Every try the client would stall in the black loading screen impossible to dismiss. The B button did nothing and going to the steam menu and choosing the "Stop Steam" option only grayed out the option and nothing more. A reboot was needed in that case or the black loading screen would persist.Tested both directions.

Also tried with an android phone as a client with the following results:

• OLED Deck seemed to work with both video and audio present as well as input. Didn't test that much but it didn't take long to be only a white blank screen but with audio and input apparently working
• LCD Deck crashed/reboot (maybe only the steam client) as soon as the connection was established between the android phone and the deck

Steps for reproducing this issue:

1. Try to use steam remote play together between two steam decks