Remote audio redirection missing important option

Hello there.

Setup: Windows Server 2019 as host. Multiple Hyper-V guests as clients (windows 8.1)

Connection is done via VMConnect.exe (RDP). Enhanced sessions are enabled on host and clients and all options to redirect audio can be seen and selected.

However one option for a particular scenario is missing. It has been asked on superuser already and can be found by googling "USB microphone on remote desktop doesn't appear/record" (I cannot post links with this account).

The missing scenario is as follows: There are local sound input devices on the installed on the remote clients, like Splitcams microphone or Audio Cable. And they are only visible and usable when selecting "Play audio on remote computer" for the RDP session.

However then the remote clients audio will not playback on the host.

With selection "Play audio on local computer" then there is audio playback on the local computer but the remote input devices are no longer installed.

So what is missing is a way to keep the remote input devices available in the guest but redirect the remote audio playback to the loacal computer. This could be either achieved by installing the audio endpoint for local redirection into a session where "Play audio on remote computer" has been selected.

Or this could be achieved by keeping the remote input devices instead of removing them when "Play audio on local computer" has been selected.

Any workaround or hack to make this work is appreciated.