is one piece episode 223 filler?

The Straw Hats travel through the forest to find the Palace of the Sea God. Usopp and Chopper are chased by a snake.

After losing the snake, they become separated from the others. They also run into Zoro, who awkwardly ignores them.

However, when Zoro finally sees Luffy, he attacks Luffy using his swords. The Straw Hats believe that Zoro was hypnotized.

Luffy tells the others to go ahead to the temple, while he stayed behind to battle Zoro. Zoro defeats Luffy with an Oni Giri move.