The post you responded to is doing AOS. You keep telling people, including those doing AOS that KCC email based on CN. That's not quite right. Response from KCC for those doing AOS is NOT based on their CN. For some reason, you got fortunate, KCC sent your 2NL within an unusually short amount of time. It had nothing to do with your CN. There are people with higher CN who are doing AOS, and whose CNs will certainly not be current in Oct who have equally received their 2NL too.
Ian sorry but can you tell me what is AOS?