I spoke to Anthem support, who make popular premium AV receivers. After providing them with technical details, they have unfortunately announced that there is not enough demand in DTS-HD HRA for it to be explored further.
I have a workaround that will provide the same quality of audio, however it will be streamed as PCM.
Unfortunately I can’t go in to full details. If a company that manufacture $8000 receivers are not interested, then Denon won’t likely care about receivers that are a tenth of the price.
We will continue the development on our own.
Sam