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Peter,
It took me quite a while to find the context of DFM (Discrete Field Model), which was key... I think I am following your conception and don't object to anything so far.
However, I should explain to you that I refernced the 'z ~ recessional velocity' perspective because it seems to be commonly held by astronomaers. It is my simple view that (short duration SN) light emitted long ago has been independently propagating (coincidentally in our eventual direction) through expanding spacetime as the Milky Way has been receeding away from the approaching light. I recognize this view is also limited, but I think actually more corrct that the astronomers' view that all distant galaxies are receding away from 'us'.
I also suspect that the universal medium is the field of universal kinetic energy that initially produced spacetime and continues to produce its expansion, that is locally contracted by the potential energy of mass, which is in turn agrregated by that external field of kinetic energy. But I'm still thinking about it...
I read the second paper (book chapter) some time ago and did not focus on it. Can you please mention what specidfically you're referring to as the 'other evidece of the process'?
Please continue, further commenting on any misconceptions you may identify.
Thanks,
Jim