HomeKit camera not work in different networks but the same geolocation.
Look screenshot:
Case 1 - live streaming not working from camera Case 2 - live streaming working from camera
The problem is that the homkit adds "Apple TV home" and "HomePod home" in the home centers to the "Garage" house and makes "Apple TV home" the main home center, but these local networks are not connected in any way, and as soon as "Apple TV home" becomes the home center, it stops streaming live video.
How to fix it?