How Does One Get 24bit Audio from the Surface Pro 11?

Question

In speaking with Microsoft support on 7-21-24 and 7-22-24, I was informed the audio chip on the Surface Pro 11 (CoPilot+PC snapdragon version) is a Qualcomm WCD9385 and that it supports 24 bit audio.

Allow me to explain my test environment and why this may be false. We have a 2016 Surface Pro 4. When using the MiniDisplay Port via a MiniDP cable (male) to male HDMI into our Denon AVR, we get both 16 and 24 bit audio along with DTS-HD, Dolby Digital Plus and a variety of other Audio Encoded Formats (see included image with proper markups). In purchasing a Surface Pro 11 a few weeks ago that claims 24 bit Audio, this can't be demonstrated via the USB-C port (which is the external port option as Wifi and Bluetooth don't support 192k x 24bit High Resolution). I acquired a new 8K Blue Rigger quality USB-C to HDMI cable and connected the Surface Pro 11 to the same exact port on the Denon AVR as the Surface Pro 4, guess what? 16 bit only and no DTS-HD or Dolby Digital Plus or other audio encoded formats. Only 2 supported: DTS Audio and Dolby Digital. (see screen capture with red markups). Initially I thought this had to be the Blue Rigger cable, not so. I connected the same Blue Rigger cable to a Lenovo Laptop also with Win 11 to the exact same port on the Denon ( see image), both 16 bit and 24 bit Audio were available as well as many Audio encoded formats. This eliminates both the Blue Rigger cable and the Denon as the problem, it's the Surface Pro 11 Copilot+PC. The Audio Drivers/Qualcomm chip is my consensus. The difference in sound quality when running a 24 bit audio file vs. 16 bit is quite noticeable, not only to myself but other friends and family. This is a major disappointment but sure hope someone else can prove my scenario otherwise. Also, I wonder if the Surface Pro 10 Intel version of this tablet offers the 16 and 24 bit depths? Anyone out there able to perform this test?