Maybe I should have been clearer, I think this BT receiver/DAC in the VN is worse than normal BT. I have a standalone external BT receiver in my home setup, no noticeable difference between that and other audio sources. Heck my double din Pioneer in the wrx is better than the HV. Source files are either Tidal or personal FLAC files ripped from CDs using EAC.
You bring up a valid point that it *may compress it, but it doesn't have to. I think the HV struggles more than it should for BT, then again audio quality is often in the eye of the beholder and hottly debated. In any case analog cables for the win!
https://www.lifewire.com/what-to-know-about-bluetooth-3134591