Anybody connect Bluetooth headphones to their TV? Does it support 5.1 or 7.1 passthrough from HDMI?
Do you mean via ARC? I have my ps4 pro and TiVo connected directly to my tv then back to my receiver and get 5.1 Dolby or DTS fine. Just need to fiddle with the settings so they match I.e. Select Bitstream and Dolby on ps4 then select bitstream and Dolby in the Samsung tv audio settings.
Only issue I've had is when I put a Blu-ray on it changes to linear pcm and i lose surround sound, but i think that's a ps4 issue not the tv.
Update on the above: just a seem to have to select DTS or Dolby on the PS4 depending on what the film is encoded in.