Yes, I'm talking about the Second Sight disc and its Atmos track. I won't be able to check its verticality, as my setup is 5.1 only and I don't know how to check that through dedicated softwares (I simply used Audacity so far, so it decodes the track as 7.1 only). However, regarding the rear channels and the stereo mains, it might indeed be that you found it too subtle because of the volume level of the rear channels. The L and R front channels however looked fine in this regard (compared to the center one). I'll check that soon on my setup anyway, though, and hear if in the end, my feelings echo yours.
Regarding the Atmos effects though, I'm unsure if decoding solely the TrueHD core will enable them, or if you need to be able to decode the whole lossless track.
Regarding the Atmos effects though, I'm unsure if decoding solely the TrueHD core will enable them, or if you need to be able to decode the whole lossless track.