Hybrid meetings are meetings with both in-room and remote participants and this present some unique obstacles.
Video conferencing calls are not live, and they are non-synchronous. This means that what you see and hear on your computer or personal device happened roughly 1 second ago, and is also not happening at exactly the same time as the others on the call. This isn't a problem when people are in different rooms as there is no live action to reference the audio and video to, and may result in nothing more than someone saying "I'm sorry I didn't mean to talk over you".
However in a live environment it presents as outlined below:
We must treat the room as one single live instance, all audio and video happening in the room would have no discernable latency to the in-room participants. Cameras pointing at people when they talk, so that they are in scene. Audio with echo cancellation, acoustic and feedback control which are properly managed. Remote participants who can join the "in-room" experience without issue, this should be the Hybrid experience.