Unfortunately that's not quite true, since the "app screen" on the media display during Android Auto use has an additional "Toyota" icon that AFAIK isn't coming from my phone.
What's more concerning is that it's entirely unclear exactly what information is shared over the Android Auto link, in my case, over Bluetooth.
What's more concerning is that it's entirely unclear exactly what information is shared over the Android Auto link, in my case, over Bluetooth.