is one piece episode 170 filler?

Chopper was running around scared and Robin is seen in what appears to be the ruins. Zoro is seen talking to himself about his Flying Blade attack and he tried it out on a bird attempting to attack him, but he said the attack wasn't ready, thus searching for another thing to test this attack on.

Chopper, running scared, is actually being chased by the Divine Soldiers, but they encounter a Shandia and ignore Chopper and fight one another. Robin, still at the ruins, is approached by a Divine Soldier who tells her to go this route leading to God's shrine.