I was playing around with lighting tests and got playing with caustics and a mirror ball. So i built a quick test setup and soon realised that while the light thats hitting the mirror ball emits as expected with volumetric streaks, the reflected light bouncing from the ball to the walls does not produce the same 'god rays' but still displays the correct brightness on the walls.
I would assume the reflected light would infact produce a ray as bright as the incoming light when reflected of a perfect mirror this way and should therefore produce a beam.
Is this a restriction of the caustics solver? Im aware this is a pretty niche use case.