No live histogram on live view when tethering?

Correct me if I am wrong, but there's no live histogram on live view when tethering? Am I missing something here? This makes no sense to me. To see the 'live' histogram, I have to go back to look at the histogram in live view on the camera LCD. I have to close live view in Capture One to be able to see live view on the camera, then close that to go back to live view in Capture One! It's a lot of faffing around & kinda defeats the purpose, when I'm trying not to disturb the camera mounted on a copy stand, delicately focussed down on the grain in the film I'm 'scanning' with the camera. Come on Capture One, you really need to have live histogram! Cheers...