I don't expect the website to be smarter than C3PO, but for gosh sake, anything more than a vanilla search seems to throw it off into looney tune territory.

I am trying to price out an itinerary of LAX-YYZ(stop/7days)-LHR-YUL/YYZ-LAX in PY. I can't set a cabin choice per segment, which is an issue because AC stops flying widebodies with PY to LA late next month. So instead of giving me options of LAX-YYZ in coach, and YYZ-LHR in PY, the itinerary that comes back is LAX-IAD-FRA-YYZ in PY, then YYZ-LHR in PY, followed by LHR-YUL in PY, then YUL-CDG-EWR-LAX in PY.

Don't even ask me the price, and who in their right mind is going to actually fly that. It should price LAX/Canada segments in coach and the PY eligible segments in N or O.