On Webex meetings, we often see attendees listed multiple times. For various reasons, attendees often connect using multiple devices-
Join via a mobile phone for audio
join via computer, for the web meeting, screen share etc.
Webex should recognize the multiple devices/connections, belonging to the same attendee and present as one participant.
Microsoft Teams does this. On Microsoft teams, When I join on my phone and then go to connect via PC, it asks me if I'm adding a device or replacing the call.