UA to AC Status Match Failed.
I figured I'd give it a try, but didn't get any satisfaction.
I am *A Gold, UA Premier Exec, w/numerous hotel and car-rental "gold and platinum" status holdings, and am a bona-fide relocation to Canada as of 2 weeks ago.
My response: a big fat "No" from Aeroplan.
I guess I'll earn AirMiles on WestJet within Canada, and continue to book tickets via UA for flights to the USA. Their loss.

The people I was speaking to at Aeroplan had never even heard of such a thing as allowing status to be given from another airline, and were not about to bend the rules for me regardless of how compelling an argument I made.
When I told them about other airlines' willingness to do this status-matching, they just didn't believe me.

Hope this saves somebody else some time.
Cheers