If the "h/r" ratio is smaller than the critical value 0.5, an additional deflection that can validly be called "a true Coandă effect" occurs in between at a nearly constant pressure, "as in a conventional wall jet".
If the "h/r" ratio is smaller than the critical value 1.7, the decreased pressure at the origin of the jet continues along the wall (till the wall comes to an end-see diagram on the right). This is "a true Coandă effect" as the jet clings to the wall "as in a conventional wall jet".