Can I have two windows display the same view at once?

I am trying to launch a simulator into an Oculus Rift (DK2) but still be able to view what’s going on inside the simulator in non-stereoscopic view. I haven’t been able to find any programs to do this so my only idea is that if Unreal can launch a standalone player and show what’s inside that player in another window, I would be able to make one stereoscopic and another non-stereoscopic. Is this possible and what do I need to do to potentially make this work?