Zoro has emission adv CoA
at least, you can't dispute that man.
And I am 99% sure he already uses adv CoO.
While FS user luffy was sleeping he caught the arrow
While FS user luffy was sleeping, he was already on his way to block hakai
He saved FS user luffy's ass more than one time from sneak attacks and whatever on rooftop.
Sleep diffing kaku is also a potential hint. A feat only seen
His reaction speed really is insane, not to forget his general instinct and foresight.
We will need to see him to internal destruction somewhere else. When he hasn't access to his swords and needs to save his dumbass captain once again.
Unlike the special snowflake mc zoro doesn't get 25 chapters of special treatment to learn this stuff on screen. Bro just does it like a chad.