EOS Webcam Utility Pro (unable to add a second camera via WiFi)

[saq]

I currently have my EOS R connected via USB C to the laptop but when I create a second scene I try adding my R6 Mark II via WiFi. The camera successfully connects and the software confirms that a new camera has been added - advising me to have it on 29.97 FPS which I have done, however, a new screen does not appear only the EOS R and the Mac webcam are the available options...

Any idea of what's going on?

I'm currently running the Mac version of EOS Webcam Utility Pro.

[Waddizzle]

I have no use for the Webcam Pro Utility, so I am not familiar with the subtle details of how it is configured and should work.  

QUESTION:  Does it make a difference if one camera is connected using USB and another is connected using Wi-Fi?  Are you free to mix and match communication protocols like that?