is attack on titan (shingeki no kyojin) episode 65 filler?

Before Willy Tybur leaves for the festival, he calms his kids down and bids his final farewell to his wife and children. Some time before the festival, Willy discusses with Theo Magath about the possibility that Willy will be attacked during the event.

Willy explains that the Tybur family has been making efforts to improve the social standing of Eldians around the world while focusing their attention on movements on Paradis Island, but they realized too late that their enemies had crossed the ocean and arrived at Liberio.