Linking loyalty/membership cards to credit cards
When Apple Pay was first announced, it was stated that it would be possible to link loyalty/membership cards to credit cards so that one merchant transaction would access both, for convenience. So far I see no way to do that. I'm in Canada, have added my credit cards to Apple Wallet, and have added my Air Miles card to Apple Wallet. How do I link them? Or does the merchant and/or bank have to do something on their end to enable it?
Mac Pro, OS X Mavericks (10.9)