Applied for both Visa and Mastercard versions one after another using separate browsers. Both applications were defered. I already have 2 Citi AA and 2 other Citi Preferred (converted from other Citi cards). I decided not to call. 3 days later I received 2 emails confirming that my applications were approved and 5 days after that I received both cards (a Visa and an MC) in the mail.