My XPU Shadow Catcher is created in the Object level, so the shadows and AO are present in the scene for other scene objects to react to, so you can see the shadows in reflections/refraction's in the beauty pass, no compositing needed, it works just like all other Renderers Shadow Catcher, you also have full control over the shadow quality. It works with any 360deg HDRimage, the ones I use are from https://polyhaven.com/hdris [polyhaven.com]