I signed up for two separate credit cards that both give the benefit of a LoungeKey membership and a few complimentary visits (BMO Air Miles World Elite and BMO World Elite). Is there a way to stack the complimentary visits together in the app (ie register both credit cards to same LoungeKey account)? Otherwise I will have to wait to register my 2nd card with LoungeKey until I use all the free visits on my first one.