Indigo-ray body Vs. Sixth-Density

[Bring4th_Austin]

I've always understood sub-densities to be steps of awareness within the major densities that we would progress through as we evolve our consciousness. This view seems to not be compatible with the idea that a "3rd density, 6th sub-density" body is activated upon death. Does this particular view suppose that our third density body is always a "3rd density, 3rd sub-density" body? Is this idea of a 6th sub-density body reconcilable with the idea of progressing through sub-densities as we experience 3rd density?