Why doesn't Roon list my Nvidia Shield as a display device?

[Edward_Lee]

I completely unplugged the Shield and left it off for a few minutes. Turned it back on and now Roon lists it as a display device!!

Unfortunately, it appears I have a much bigger problem now. I started a separate thread about it:

Can I get Roon display when endpoint and display device are both connected to HDMI on AVR?

My Roon endpoint (which is a Windows 10 PC) is connected to My Denon receiver via HDMI. I also have an Nvidia Shield connected to this receiver which outputs to an LCD projector. Is there some other way I can set this up so that I can both output Roon’s audio through the Denon and also get the Roon now playing display through the Shield?