How to view full screen on monitor when in VR

Thanks for reply, Now I understand. Oculus not in same league as G2, doesn’t speak to windows mixed reality, doesn’t have an equal to WMR window. The Oculus Desk top app has to be connected with the headset and then the sim started. then the sim can be switched (within the sim) from mono to VR. I agree the double view is generated by MFS but it seems it can only have a single output either in mono or VR . And that the same in headset or onscreen.
On that last when X Plane 12 is started in mono there is an in sim option to connect VR. When that is selected the headset is in VR but the onscreen picture remains in mono. Not that I’m promoting
X Plane, but why cant MFS do the same?