Can I turn off realtime shadows and use a shader to cast realtime shadows?

Update

I am understand shadows alot more now, if an object is not set to cast or receive shadows other objects shadows move right through them. So I guess, my question now is, are depth shaders ment to cut out the shadow, or can i make it so shadows drawn after all other draw calls?

im using depth shader mask to cut into a wall, from what i read it is meant to cut the shadow aswell, but it doesn't. So is it possible to turn off shadows on my wall, let the window shader run on x renderqueue than apply the shadows after? I can't seem to find a script that just renders the shadows, or if its even possible without them turned on, on the gameobject.

The pic should say remove cutout shadow :)

This is my script attached to the window, i setup renderqueue with a script based on camera position. i had shadows being cast from it but i have removed all shadows from it until i get the wall shadow cutout.

  Shader "Depth Cutout" {
   
   Properties {
    _Color ("Main Color", Color) = (1,1,1,1)
    _MainTex ("Base (RGB) Trans (A)", 2D) = "white" {}
    _Cutoff ("Alpha cutoff", Range(0,1)) = 0.1
   }
   
   
   SubShader {
   
    Tags {"RenderType"="TransparentCutoff"}
    LOD 200
    Blend Zero SrcColor
    Lighting Off
    ZTest LEqual
    ZWrite On
    ColorMask 0
    Pass {
    
    
    }
   
   
   }
   Fallback "Transparent/Cutout/VertexLit"
   }

Maybe I am missing something obvious to make the cutout work for shadows?

Any help or nudge would be awesome!