Originally Posted by
r2d2
... In the end being not able to buy a single ticket is a marginal case when connecting through OW hubs, so AY must have calculated that they will get more revenue by encouraging people to buy their trips on a single ticket.
Yes it is true there needn't be a codeshare to combine fares into one ticket. However, IME it makes it easier, not sure why. Perhaps the website treats codeshare destinations like AY-destination and there is something in the search engine that prefers codeshares?
Anyway, the site does indeed offer connections to TPE via HKG on BR, CX and KA. Don't think it used to do that but it is great it does!
To me personally the case is not marginal though. Searching a ticket EU-CAN in november on ay.com fails with "no such flights". Sometimes it offers a connection via PEK on CA, but never via HKG. HKG surely is a OW hub, but IME the possibilities to book HKG-connections are limited on ay.com, especially with OW affiliate KA.