Originally Posted by
Adam Smith
Married segments should be the same across all programs. If the UA site is showing YUL-ZRH-FCO as available but not YUL-ZRH, it will almost certainly be the same for Aeroplan.
There may be variance, Aeroplan has told me that they provide "cleaner" results (and that wasn't from an agent).
UA has AAA-BBB-CCC available, as well as AAA-BBB or BBB-CCC. AP wouldn't let me book AAA-BBB-CCC, no matter how hard I tried. They had AAA-BBB and BBB-CCC available, but they couldn't be combined, and AP confirmed it wasn't an error compared to UA's results.