> Third, it can't navigate a path without connecting to the satellite (seemingly for traffic data, but possibly it isn't even calculating the path locally).
I’m confused by what you are saying here. In-car navigation use satelites to know where the car is. If it can’t path plan without satelite connection then that is most likely because it is waiting for a localisation fix.
Trafic information could be coming through satelite broadcast but I doubt that it does.
There is no way that a navigation tool would receive path planning through satelite. Two way communication is much more complicated than one-way reception, and there is no way it would be financially worth doing that.
Sirius sells traffic info add-on, which is broadcast from the satellite. It is not as detailed as the data-linked apps in cars/phones and is only available for the few big metros but can get the traffic info on an older car's nav system.
I’m confused by what you are saying here. In-car navigation use satelites to know where the car is. If it can’t path plan without satelite connection then that is most likely because it is waiting for a localisation fix.
Trafic information could be coming through satelite broadcast but I doubt that it does.
There is no way that a navigation tool would receive path planning through satelite. Two way communication is much more complicated than one-way reception, and there is no way it would be financially worth doing that.