This is why I keep my camera on, so that whoever is talking sees me nodding away whilst they talk and when they go "any questions" you can pause and say "None from me". It's also why you always unmute yourself when someone joins the call - yes, we can hear you, yes your mic is fine, no you're not muted, it's just no one is replying becuase they're all muted and causedoing something else because we haven't started yet.

It feels like people really haven't put any thought into how to handle video conferences.