webvr and broadcasting on TV

I have krpano tour running in WebVR in Firefox on VR glasses. Is it possible to broadcast the view to the external monitor/TV but without splitting in two halfs?

in my case (HTC VIVE PRO) it´s very easy. Had to spend reasonable time to find the solution (and find out it has nothing to do with krpano nor with webVR or firefox browser) but it is as easy as to just click on headset icon in Steam VR toolbar and set mirroring :D