Maybe, but I would interpret this to mean that they can't guarantee a seamless handoff between zones. Like, they obviously have to hand off between satellites a

Maybe, but I would interpret this to mean that they can't guarantee a seamless handoff between zones. Like, they obviously have to hand off between satellites all the time since they're all in motion, but it seems the expectation here is that the service could drop (for what, a second? a few seconds? a minute or two?) as it realises that you're in a new location and it needs to schedule in your transitions.