Unless the T6 radio has been hardware patched, you have a cumulative 8 hours run time before it's locked with component protection and nothing will function.
Mic pins on the MIB are the black and white ones in the bottom left of your bottom picture.
There is a full pinout on Briskoda:
If it won't let the hotlink work:
Amundsen MIB STD2 infotainment system with Android in Superb II - Skoda Superb Mk II - BRISKODA
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