vanHorck, thank you, and thank Tim as well for all his past effort.
The assessment that I would be most interested in is whether the loud noise that can be heard on the CVR of ice crystals hitting the plane indicates they had penetrated the Cb itself, or if not, how close would one need to be to a Cb to get that amount of ice crystals.
I don't recall that the BEA gave sufficient data to correlate the time when the sound of ice crystals can be heard on the CVR and the PNF turns on the anti-ice.