Viewing a camera's view inside another camera's view

Hello!

I am using 2 separate cameras in my scene, one VR enabled, and the other a normal camera. I wish to have the VR camera's view (what can be seen in the game mode for that display) in a box inside the normal camera's view. Basically, so that the person viewing the normal camera can also see what's going on in the other camera. Is that possible? Help would be much appreciated!