Frustrating that Dr C didn’t have the imaging report, but it sounds as if enough was seen on the images…
There has been a discussion on this which you might find interesting, here’s a link:
Q-Collar jugular compression device to protect from brain injuries in sports 
- General - Living with Eagle
It seems as though the science is debatable with these collars?
Well done for asking if Dr C will do any teaching! His surgical technique does sound quite different to others’, so good that he’s being cautious and wanting to gather more data, but a shame he didn’t agree to surgery straight away!
Take it easy doing the work on your new home 
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