Got some atmos demo material off the internet in MP4 and MKV form. All of them play perfectly on my Xbox ONE.
However if i play the content via the TVs player, i get no sound.
Xbox is connected to the TV via HDMI ( obviously ) and the TV is connected to my AV receiver via HDMI ARC
My AV receiver supports TrueHD ( I checked the specs )
So my question is. I must not have a TrueHD TV, however the Xbox ONE is, and so is my AV receiver.