So it seems that the more features I use via carplay the less it crashes. It's not perfect, but it certainly helps.
It’s really quite a shame as they’re fantastic cars otherwise. But yes, it’s never CarPlay that does it.
However my wife has an iPhone and although going next to the same antenna does crash the system as well, it does so very briefly and just resets the connection or something, and as soon as we go out of range it starts working again.
So it does look like there's some difference between CarPlay and Android Auto even when using the same exact car with both.
No idea why this happens and I can only assume the antenna is transmitting in a frequency that interferes with the wifi connection (it does not require a cable like older VW cars) which triggers a bug in the Android's stack, but Apple's stack seems more resilient somehow.
I would love to know if anyone else has had the same experience because I find it quite baffling and very annoying when I forget to disconnect my phone when going through that antenna.
Infotainment systems are prone to runtime errors and crashes, if you interact less with the internal workings of the infotainment system itself, it does a somewhat good job of just passing audio through and you have fewer sessions with a crash.
That said; i have noticed a disparity in what the infotainment gps navigation can do and what carplay can do- carplay is often limited to the center console, but the built-in navigation can go into the HUD of the car. An annoying difference.