The windshield has a coating on it for tint and other “stuff” - folks on here know more than me. The car has all sorts of shielding for the electronics, etc. The only place on windshield where there’s no shielding is that little spot next to the cameras on the right. Folks have tried other spots and, if you look closely, you can see the difference in the glass in that one spot.
Windshield and roof will block all sorts of things, like my RFID parking tag for work - which I now have to wave outside my window to get into garage.