A quick service announcement.
As someone who works with multiple laptops/devices and is having to straddle multiple client VPNs and what can and does not work because we are still looking to upgrade our networks and get up and running correctly.
If you have multiple devices all connected to the same call, they will generate an echo between them as they are in close proximity.
A helpful hint: Only use one device as your prime audio device, everything else should be muted.
I find I do software demos on one machine (no audio) and have my other device handling the audio (depending on the client).
Works perfectly and avoids the awkward… echo… echo… echo…