I frequently watch the news. The guests are connected thru some kind of satellite link. There is a noticable lag time during the conversation. It can be very annoying. You have to be willing to talk over someone to be able to make your point sometimes.
If the guest were on a confrence call (video stream), would the lag be as noticable? You would think a land link would be better for remote news interviews.
Of course if it were better, they would be doing it. So....???