Wait! About Aizen Sosuke & Kisuke Urahara

Urahara was expelled from SS before Aizen became a Captain and had a chance of showing him KS to all the Captains of the Gotei 13, so in Fake Karakura Town Arc Urahara had yet to see Aizen's KS ritual/release, right? Am I forgetting something or did Urahara never fell under KS?