Why would someone do 320 to JFK via YYT (slow, narrowbody, stop-fuel-go in YYT) when an immigration precleared A330 is 90 mins up the road?
I used to think a 319 SNN-YYT-SNN might work as a AA-style stopover buster but if the bilateral is re-neged now it will be along the lines of the US one which means SNN won't have to be placated.