Hi guys,
I have video interface in my car and iPhone connected through it - although I can get screen clone on my F10 navigation it's not possible to output Garmin HUD screen due to app limitation. When you open Garmin HUD app while iPhone is connected to the 2nd screen you will get message that that option is disabled and that screen mirroring is not supported
Just try it on your TV or through Airplay so you will know what I am talking about… I tried like couple of months ago but I doubt they changed that if there was even any updated to the Garmin HUD app in the meantime.
So bottom line is: you can't get picture from Garmin HUD app at your BMW factory screen and directions on HUS. It would be neat but it doesn't work...