Let me try and clarify, for all our understanding, if I misunderstood please correct me.
I understand the phenomenon in question is when a news anchor is interviewing a person via satilite in another country/state/room, and the question is asked. We watch the person live, see him sitting there waiting for the question asked to reach hin and then he responds. You are wondering why the video is real time, but it seems that the question takes a long time to get there.
This is a guess, but a good one I believe. The sound and video we recieve is real time and is in-sync because they use the best feed and transision equipment on the interviewees end. The slow down occurs in the interviewers questioning, in short notice iterviews I imagine they don’t have time or need to set up a video display on the interviewees end and therefore he has no visual of the interviewer. Most News remote trucks only carry transmission equipment, therefore the transmission is good (ie the interviewee). The trucks however don’t have a reciever and the only means of getting the voice to the intervieee is via phone. The phone line is much slower than the transmission to satilite with its resistance, switching and landlines. Even a cellular or local radio transmission may be slower than a satilite feed.
The facts expressed here belong to everybody, the opinions to me. The distinction is
yours to draw…