https://edition.cnn.com/2020/06/23/tech/waving-video-calls/index.htmln person, there are subtle (and not-so-subtle) social cues, such as closing a notebook, checking your watch, putting things in a bag or getting ready to stand up, that show an interaction is winding down. But those same signals don’t translate on video calls, so experts say people are trying new behaviors that better suit virtual communication, such as waving and smiling, even in an otherwise professional setting.

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