I do not think the verbing of "Overton window" conveys the meaning you intend. Did you mean, "it constrains itself to the Overton window?" Or, "it attempts to

I do not think the verbing of "Overton window" conveys the meaning you intend. Did you mean, "it constrains itself to the Overton window?" Or, "it attempts to move the Overton window (up/down)?" Because saying it "overton windows" the discussion is meaningless.