I can on refere to how it works in my Arteon, so:
1. Yes - they can be displayed in both displays at the same time. You just chose Nav from the steering wheel menu to display it there.
2. The light can be adjusted (also fully off if I remember correctly). You can find that in the main menu.
I would in general suggest you read the owners manual, as there are loads of different settings and adjustments available, somewhat depending on which satnav/radio/soundsystem you have, and which options the car has - including drivers aids.
1. Yes - they can be displayed in both displays at the same time. You just chose Nav from the steering wheel menu to display it there.
2. The light can be adjusted (also fully off if I remember correctly). You can find that in the main menu.
I would in general suggest you read the owners manual, as there are loads of different settings and adjustments available, somewhat depending on which satnav/radio/soundsystem you have, and which options the car has - including drivers aids.