is one piece episode 565 filler?

Brook continues to fight Zeo and strikes him with his sword due to the latter shouting his attack. However, he makes up a name called Body Sword Crush stating he broke the tip of his sword despite Brook stating he stabbed him.

He manages to break Brook's neck off, however, as his head falls, he remembers tapping into the true powers of the Yomi Yomi no Mi during his training. He learned of a powerful energy that allows his soul to stay in this world, despite having died once already, and how he has gained control of his very soul.