Passthrough over link not working in 5.1.1

Hey all, I've spent the last few days trying to get passthrough over link to work either via VR preview or a normal build to windows, and neither will function properly or at all.  I can build the same project to native quest and it works fine, but any type of using passthrough over link is not working*.  I've also reached out to multiple people I've found that have mentioned trying passthrough over link on twitter/reddit/multiple discords (unreal slackers included) and not a single person has come back saying they got it to work normally.  I have gone through every bit of documentation I can find, checked these forums as well as epics, and no one has an answer.  So I'm reaching out hoping SOMEONE can shed some light on these questions:

1. Does passthrough over link function at all currently? If this does not currently work, is there any sort of eta on when it will?
2. Which version/s of unreal should this be functional on?
3. Does it matter if we use airlink vs. wired link?
4. Is there current documentation to can be referenced to set this up?
- (https://developer.oculus.com/documentation/unreal/unreal-passthrough-over-link/ <- these do NOT lead to working passthrough as its the same docs everyone else who has failed to get it to work has referenced as well)

Related settings:

Test scene with the same example with both hole textures to be safe:

Quest 2 Native Build:

Windows build:

VR Preview results in the same as the windows build above (just all black where passthrough should be).  I have tried these same settings with Vulkan, DX11, DX12, rebuilt the projects from scratch, tried using steamvr and virtual desktop, tried airlink vs wired link.  I have also tried changing the passthrough component stereo layer shapes to every option and tried underlay vs overlay.  A couple times I have changed the shape from something to Reconstructed Passthrough Layer and preview again, and passthrough will come up, laggy and covering the full screen, but I can not make this happen programmatically (toggling visibility of said components as per the best practices page says to do).  Basically the only way I can get any sort of passthrough while using link is if it shows up upon launch and cannot be toggled on or off at all.

Any info/tip/suggestions would be greatly appreciated, and if its something I have missed I apologize.  Thanks in advance!