DirectionalLight visibility with HDRIBackdrop

Is there a way to make the sun (DirectionalLight) visible in front of the dome mesh from the HDRIBackdrop ?
Thank you

There is, however it requires a small modification of the HDRI-Backdrop master material itself, and you need a Skyatmosphere in your scene too, to make the sundisk visible (and the directional light must have the Atmosphere /Fog sun Light setting activated).

Here from minute 24:20 he talks exactly about that and how to do it:

Oh wow, so simple, it’s working perfectly, thanks a lot !