- Learning kinemon's fire cutting ability off-panel, showing that Oda takes into consideration arcs progression in his rating
- Receiving Enma, allowing him to train his haki and get much stronger, with all his major feats against Kaido happening thanks to that
- Unlocking conqueror haki mid fight with Kaido
So basically, he got multiple PU on and off-panel since the beginning of the timeskip, while constantly pushing his limits with Enma, to the point of unlocking conqueror haki. Timeskip Zoro is nothing comparable to current Zoro
- Receiving Enma, allowing him to train his haki and get much stronger, with all his major feats against Kaido happening thanks to that
- Unlocking conqueror haki mid fight with Kaido
So basically, he got multiple PU on and off-panel since the beginning of the timeskip, while constantly pushing his limits with Enma, to the point of unlocking conqueror haki. Timeskip Zoro is nothing comparable to current Zoro