[LAU] Physical distance performance with Linux?

[Mac]

In our current world situation I see a lot of videos, and in some cases
live, performances by multiple musicians/vocalists in physically different
locations.

Some are obviously in a MacGyver setup in the closet, others are in rather
tricked out home studios (like the one I just watched of the Doobie
Brothers, where they all were in their own studio).

Some are obvious compilations, video effects, etc. added. But, when they
are live how do they deal with delays and monitoring for the local
performance (in the Doobie's one, there was some post processing, but, the
duets seemed really tight, both instruments and vocals.)

My question is, have any Linux folks had any experience setting this, with
Linux tools obviously..., and how did you deal with delays and monitoring
when live or (I assume when processed video is involved) monitoring and
delay for multi-tracking from around the world?

Regards,
Mac
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