Well, yeah besides COC

. I'm talking about CoA specifically since we don't know COC's ability in combat yet or the full extent of it. All we know is that it can knock out opponents. My point with CoO still stands, Rayleigh has been retired for years and was still able to use CoO effectively against an admiral level fighter (being able to predict to his moves and where he'll move next). Rayleigh never complained about his haki being off point, it was more that he wanted to fight Kizaru in his prime so he can move more freely without getting fatigued so quickly. (implying it's more of an issue with being old than his haki)
They didn't harm Akainu and why do you keep saying Akainu went FBH against WB? Neither of us can prove that since Oda never had a visual representation of CoA at the time.