Just a note on that experiment.
Their categories for what is fine vs coarse are using pans of 0.60mm and 0.25mm. That is a much wider range than anyone is setting their grain mills. Unless they are milling with a huge gap, everything in that 0.60mm bin should be husks plus whatever grain happens to get stuck to them. If you mill setting is less than 0.60mm, pretty much everything else should be falling through a 0.60mm screen.