In the Big Whisper model there are two (different) explanations for the CMBR.

A/ The quark soup from Zone 2 ended up getting some space 'to move about' at that CMBR point. First that 'damaged energy' was still tightly packed inside the compressed spaces of Zones 1 (center), 2 (Wall of the Storm), and the inner sections of Zone 3. Note well that the whole of Zone 3 was not compressed to the max, just the inner areas of Zone 3 next to and toward Zone 2.

Immediately, when there was space at the CMBR, the quarks aligned themselves to become the neutrons and the protons. And that was the end of the prior state of the universe. Energy had transformed, no return possible, because the whole was no longer whole.

Linear matter (neutrons and protons) received the additional non-linear matter (electrons) to bring the universe total back into a neutrally charged outcome. This is very important information because we then have two different energized outcomes: linear and non-linear, via two distinct pathways. The non-linear electrons got pulled in from the remainder of the original energy.

That entire remainder from Zone 1 and Zone 3 split up, did not remain one total whole, just like the linear matter was moving apart, it moved apart. The largest setting for non-linear energy (material and non-material) is then a galaxy.

B/ That bring us to the second option for explaining the CMBR because it could actually be the edge of the cocoon we exist in with our Milky Way.

I have just one comment to back this up, so not much scientific evidence for the following:

* We may be seeing our 'pink glasses.'

When wearing pink glasses, then the entire world will have a pink tinge.

If we do not realize that the Milky Way is inside a cocoon of immaterial energy, and yet that energy does have an edge, then we see the edge signature everywhere we point our radio telescopes to. We can then incorrectly place that information on the universe instead of on the outer edges of our Milky Way.

The one piece of 'hearsay evidence' I have is that the CMBR we see everywhere 'lights up' when pointing our radio telescopes at other galaxies. The edges around other galaxies (I am told) give off a stronger CMBR signal. If indeed correct, then that would confirm that galaxies exist inside a cocoon of immaterial energy.