The D2 chip is the glass one and can't be moved to another key as it is epoxied in place. Coding a new key from scratch requires the immobiliser pin which is non-trivial to get. Audi just plug it in to the mothership and it happens automagically, but aftermarket tools are available to extract it. VCDS can't code it without the pin.
I can't remember the company name of Neil's locksmith either, but he did keys for a few of us at the 2018 meet.
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