is attack on titan (shingeki no kyojin) episode 66 filler?

Pieck arrives in time to drive the Scout Regiment away from Porco Galliard, using gunfire from her Panzer Unit. Meanwhile, Lara Tybur uses the power of her War Hammer Titan to impale Eren Jaeger as he holds the hardened crystal she is using to protect herself.

Though Eren manages to block the attack against his neck by hardening the arm of his Attack Titan, the rest of his body is lifted into the air in a tree of hardened Titan flesh. The Warriors and the Scouts regroup as the Beast Titan arrives.