When does the transition from clip space to screen coordinates happen?

Question

I was studying the rendering pipeline and when I got to the clipping stage it was explained that from the view (eye or camera) space we have to pass to the clip space

Answer 1

Clip space and NDC (normalized device coordinates) are not the same thing, otherwise they wouldn't have different names.

Clip space is where the space points are in after the point transformation by the projection matrix, but before the normalisation by w.

NDC space is the space points are in after the normalisation by w.

http://www.scratchapixel.com/lessons/3d-basic-rendering/perspective-and-orthographic-projection-matrix/projection-matrix-GPU-rendering-pipeline-clipping

Camera space --> 
x projection matrix ---> 
Clip space (before normalisation) --->
Clipping ---> 
Normalisation by w (x/w, y/w, z/w) --->
NDC space (in the range [-1, 1] in x and y)