Enchanté @olivierlambert!
Thank you for the reply and this great product. I've followed you for a few years! A pleasure to be writing with you.
Here is the screenshot of the host. 0b appears both with XE and on the GUI.
0a (the audio) never makes it past the Dom0. I've read about various conditions where the Dom0 could hijack it but I haven't been successful in my trouble shooting.
Best Regards!