Sounds like an interesting upgrade. I am looking at this but I guess my questions below are one other members would have.
Would you happen to know how the carplay affects the drivers console between the rev counter and speedometer ( NTG 5.x i think) ? I don't want my speed, car information changing whilst driving if I am changing something on carplay using steering controls.
How long the installation would take ? ( same day 4 hours ??? )
Wireless Android auto as well as wireless carplay ?
Any other gotchas? ( I am aware of the Aux audio thing)
Comand fitted mine a couple of weeks ago and I'm a big fan of it.
I control it all off the Comand nudge wheel and find it really intuitive.
I can easily flick between Spotify, BBC Sounds, Audible, Pocketcasts and TuneIn Radio with Google Maps (or Waze) operating in the background. Others apps are, of course, supported. It fires up quickly, it's easy to use, it feels OEM, it looks great and the sound quality is excellent, too.
Support from Comand Online and IA is also very good which is worth bearing in mind.
Gotcha's; Setting up Android Auto can be a little trickier than Apple Carplay apparently; it's newer and there are lots of variations.
So before you pick the car up make sure that you have (i) updated to the latest version of the Android OS (i) updated to the latest version of the Android Auto app (iii) updated any other apps you'll be using and (iv) cleared the Android Auto cache.
I had a few connectivity problems at first but then I did all that and since then it's been good as gold. I've tested it every day for 7 days and in that time it only dropped once. I cleared the Android Auto cache (Apps=>Android Auto=> Clear Cache) and it reconnected instantly.
The other thing to bear in mind that if and when you want to connect by cable, best use an OEM cable. Cheap USB cables don't always carry data and can cause other issues as I found out. I've got a Galaxy so I ordered a new cable from Samsung just to be sure. All good now.
Anyway, these are minor issues; it's a great bit of kit.