On Mon, 12 Oct 2020 14:45:03 +0100, Andrew wrote:

Do people actually need to see each other when having a multi-way
conversation, ...

Seeing the facial expression and body language does add something.

... or is this a technological solution to a problem that doesn't really
exist ?.

But the technology isn't quite there yet so the overall experience
isn't quite as good a clear voice only conference call. The delay,
variable frame rates and variable quality sound just make it hard
work which is not fully compensated for by the additionof facial
expressions/body langauage.

--
Cheers
Dave.