User blog comment:Shin getter/AA CI rate/@comment-84.90.161.45-20150504221623/@comment-68.100.130.250-20150506181305

The game checks the higher numbers first, and the lower numbers last. So Akizuki will always trigger AACIs ONLY if the other ships did not (while Maya will always be checked first). If you want to run 2 AACIs to maximum Air Defense, Maya + Akizuki is the best possible combo. If Maya's crippling AACI doesn't trigger, Akizuki's probably will.