is one piece episode 945 filler?

Big Mom and Queen continue their fight. Queen attempts to stomp on Big Mom, but she manages to lift him and throw him down.

She then picks up Queen and throws him into a rock wall, severely damaging the prison. This knocks over the beam submerging Kid and Killer into water.

They fall on the ground, saved from drowning. It also breaks Kawamatsu's cell.

Prison guards attempt to contact Kaidou in the executive tower, but Caribou stops him from doing so.