Originally Posted by number_6
I'm afraid you will come to regret your long routings, which are very tiring (I've done them, and they are tiring even in F, never mind J) and this trip will seem more like an ordeal than a special treat. Good luck and do lots more research to mitigate the problems and make it work better.
I was a bit surprized to learn that HKG is within 200 miles of the same distance from WAS in either direction. Thus, w/ BA via LHR-NRT was shorter than CX via LAX-HKG-NRT, and BA's J product is supposed to be even a bit better than CX's. I guess we will have to "suffer" through the short YYZ-LHR J flight and look forward to a better J on LHR-NRT.
As for my parents' routing back, unfortunate but there was nothing available in J in any other routing (I tried via Canada, India, S. Africa, S. America, and routing through NRT then onto a direct AA flight over the top--nothing shook loose J except for what I already had [as a reminder:
AKL-(QF)-BNE-(CX)-HKG-(BA)-LHR-(AA)-JFK-(AA/Am. Eagle)-BWI 
] It's already ticketed, so the routing is in stone now.
Steve
BTW, is there a record for the most number of flights in a "leg" (between a single pair of stopovers) in which each flight is on a different oneworld carrier? Does "American Eagle" count as a "different" carrier than "American Airlines" (like "Jet Connect" and "Qantas")? Should I start another thread on this quirky subject?