There appears to be a problem with the USB C video output. I have a USB C multi port adapter that I have used with my Go 1 to output to an HDMI TV as an external monitor. The Go 2 will not output to that setup. I unplugged the Go 2, plugged in the Go 1, and I have output to the TV.
I was able to use Duet and output through the USB C port to my iPad Pro 10.5 as a second screen. I’m not sure how Duet is pushing the signal, but it does work.