NDI audio still not working across the net - works from Unreal not from Touch on the same path

I’m hoping someone who has successfully sent NDI AV from/to Touch across the net can answer (I’ve asked this question two years ago 0 reply), maybe from Derivative?

I’ve been trying to send NDI from a VM somewhere in the world to my laptop. Video works fine, but audio is flat and only occasionally I hear a spurt of sound.

If I get the NDI from the Unreal source that’s on the same VM, it’s fine, both video and audio, but audio is unworkable from Touch’s NDI out.

Please help? There are not many settings to tweak…