Great issue to bring up and very annoying!
Apple CarPlay is enjoyable in some ways and absolutely frustrating in many other ways (!). How come you can't use the combined view and see satellite radio information? I have a map route going and want to change/see satellite radio info, but the combined view shows music on my phone that is not even playing. I have to click on the Apps View, click on the "Ford App" which exits CarPlay, and then click on Audio. Just doesn't make any sense.
Keep in mind guys, Apple CarPlay lives on the phone not in your vehicle. That's why you
need your phone to use it! The vehicle only allows its use by being
compatible. Vehicles need to have the phone plugged in and (fortunately) more are allowing it wirelessly (if only they would also have wireless charging option at the same time!). See for more info:
https://support.apple.com/en-us/HT205634
I highly recommend you politely annoy Apple with feedback everytime it bothers you. If enough people give feedback -- their AI computers will tell them this is now a feature that needs their attention. https://www.apple.com/feedback/
However, Apple does not have a feedback option specifically for CarPlay! So you need to give it under the latest [edit] iPhone
iOS (currently 13 at the time of this writing).
CarPlay is very finicky. Why? Because it takes A LOT of (personal) information and sends it back to the mothership while you are using it (read the annoying small print user agreements to see what info it "needs"). If you change settings on your *phone* - CarPlay will not like it. Take a read over this on all the things to make Apple CarPlay happy:
https://support.apple.com/guide/iphone/intro-to-carplay-iphf33a514c9/ios
I too wish I could use Apple CarPlay and see the ambient outside temp! Good luck to the guy having problems connecting.