is attack on titan (shingeki no kyojin) episode 14 filler?

While Eren is still imprisoned, the news of a Titan siding with humans is spreading. People inside Wall Sina, however, do not want to believe such rumors as they think that an operation to retake the Walls will fail and they will have to cope with refugees and food shortages.

Some of them even go as far as to claim that the Titan may side with the refugees. On the other hand, the inhabitants of Wall Rose consider Eren to be their savior and believe that with him, they may even be able to retake Wall Maria.