is attack on titan (shingeki no kyojin) episode 34 filler?

The Scout Regiment, Garrison Regiment, and Military Police Regiment set out from Wall Rose. Meanwhile, Hange attempts to search for a horse, determined to ride for Ragako to investigate the Titan found at Conny's house.

Moblit, refusing to let Hange roam around while still heavily injured, agrees to ride for Ragako while Hange stays behind and recovers. At the head of the troops, Commander Erwin establishes a long-distance enemy scouting formation as they head for the Forest of Giant Trees.

Over in the forest, Reiner and Bertholdt see that Eren has finally woken up.