is one piece episode 712 filler?

As Punc Rock Fest blows away Gladius' subordinates, Bartolomeo watches from within his barrier before noting that Cavendish would have been killed instantly by the attack were he outside. However, Cavendish kicks him away and demands to know why Bartolomeo did not let him inside from the beginning, prompting Bartolomeo to angrily ask him if this is how he thanks someone who saved him.

Bartolomeo and Cavendish butt heads as Cavendish reminds Bartolomeo that he was covering him before this.