is attack on titan (shingeki no kyojin) episode 2 filler?

As crows begin to feed on the dead citizens of Shiganshina District, a religious man is frantically reciting words from his book. Townsfolk are screaming and running as the Titans roam the district, and the man is eventually confronted and eaten by a Titan, his book falling to the ground.

A woman flees to a dark alley, covering her mouth, and is plucked from her spot, screaming. Recovering from his state of shock, Eren attacks Hannes for abandoning his mother.

He insists that if given more time, his mother could have been saved.