In the model of the linear expansion of the universe, the maximum approach velocity (Blue Shift) can only be measured in those objects which are situated between the center and the Earth. Only in this zone is the angle at the object between the center and the Earth greater than or equal to 90°. All other objects beyond this circle with angles at the object smaller than 90° are situated in the Red Shift, i.e. in the apparent escape movement.
Supporting material: Becker-pdf-02.pdf with examples of various angles