Originally Posted by
farnorthtrader
Have AC tell you exactly what is booked on their metal and you should be able to check on UA.com what is booked on United metal. If it matches up with what you want, you should be okay. I just did this with Brussels Airlines, where their website showed me on a flight of theirs that does not exist, but when I wrote to them, they very specifically confirmed exactly what they had in their ticketing system and it was correct, but did not come close to matching what was (and still is) on their website.
I called AC again today and got a slightly more helpful agent even though it was an ICC. She said that the PNR shows the extra United leg that doesn't exist but that the ticket only shows the real AC legs. I presume it's the ticket that counts for any of this silly auto-cancellation business.