Exactly. In real life the only time anyone uses video chat is for meetings, and the reason is it enters facial communication into the mix. Most people don't want that, because if you are at home or just out it is unlikely enough attention can be given, and it is likely a proper appearance may not be ready. Imagine just waking up after a rough night, is anyone going to allow video chat in such a state. Or, imagine getting a call in a club where it's bad enough that it's too loud to talk, but maybe things are happening which the caller should not see. Levels of communication in order of depth, from least to most: Texting - clear but slow communication, no transmission of authority Audio - inflection, faster idea exchange, some transmission of authority Video - ditto, body queues, greater transmission of authority Face to Face - ditto, greatest signal clarity, stronger body queues, pheromones, strongest transmission of authority. This fits well with what we usually see in the shows. Usually when Riker or Picard talk to someone on the ship it is for information. The information is given, end of conversation. If it's a real problem, and needs some discussing, then the ship is small enough for a face to face. The text level would be the normal status updates of the ship, so actual texting would be slow and redundant. Talking is for expansion on those data. When admirals call, they do it with video in order to better transmit authority, and better to read their subordinate's reactions. I think Janeway might have frequently used video to contact her officers. That might fit with her wanting a more personal connection with everyone, but it would probably just be annoying. Like texting, everything needs to stop to video chat; voice only allows better multitasking and does so without looking rude.