NanoEvery: Digital pins on board are "Analog Function" pins of chip ATMega4809

Hi guys,

I'm going to use NanoEvery for a project and have just found this:

  1. Pins A4, A5 on board are GPIO on ATMega4809
  2. Pins D8,D11,D12 on board are "Analog function" pins on ATMega4809

(as highlighted in the attached images).

Is there anything wrong? especially with point 2.

I always use D pins on all Arduinos for Digital input/output and PWM.
As D8,11,12 are connected to "Analog function" pins of ATmega, does that cause any unexpected effects? (I have not tested yet. Just want to talk here about theory first).

Why does Arduino use those Analog pins for D8,D11,D12 instead other available Digital function pins?

Is that just because of PCB layout convenience or any other purpose?

Cheers