Literally no different to this
Both went white eyes and ended up on their backs. Does that mean defeat.....
Here Luffy goes white eyed and then next is on the floor...
Did he go unconcious ? As you can see....you have no literal proof.
Apoo was just not relevant enough to come back in the same chap since the Zoro sideplot needed the speech to happen, but literally no time went past. But rest assured Oda brings back Apoo in the literal next chapter.
Ok Ill make a deal. If Apoo wakes up this chapter then....he was KOed. However if we next see him already awake....then he was never KOed.