See how on this one, the Person(Olive Oil Bottle) stays in frame the whole time. The pivot point is through the lens in Nodal, so the person would always be in the shot.
On this one the pivot point is a bit offset from the lens, not in Nodal, so when the rotation happens, the camera is actually moving i a slight arc, and then leave frame…To the extent that you move the camera away form the Nodal point, you get a more of an ARC around…