is one piece episode 139 filler?

The episode starts off with the Straw Hat Pirates being chased by Rapanui Pasqua's fleet of 9 Marine ships. Rapanui Pasqua throws a coin, also called a "Finger Bomb" which takes down most Pirate ships, but he sneezed before using his attack, which hit another Marine ship.

Nami tells the rest of the crew to start speeding ahead of the Marine fleet because of the broken formation, where they then stop at Ruluka. Chopper sees a massive tower and the Crew follow him only to be stopped by a Tax Collector who shouts at Nami.