Btw, we never heard back from MS on my emailed question, but I was able to speak to a customer support individual by calling their support line (after several different attempts... man they really designed that thing to deflect human interaction).  The feedback/instructions she gave us were not instructions that actually connected UC to Purview, rather they were more generic instructions on connecting an AWS db to Purview.  We ended up deciding that there likely was no built-in way to do this and will simply work with what UC has.