Simultaneous USB and Ethernet connection from Roon Nucleus to Vivaldi One

I’d like to do simultaneous A/B comparison of the sound of Roon Nucleus via Ethernet connection in Vivaldi One, compared to USB 1 Input of Vivaldi One. To hear the USB input, do I need to disconnect the Ethernet? How can I have both active simultaneously for A/B comparison?
Thank You.

You can’t have both sources playing simultaneously. When the source is switched away from the network input Roon playback will stop.

To save yourself some trouble I can assure you that the performance via the network input is higher.


Thank you.