See this: http://cosmology.com/GalacticWalls.html
The splitting black hole big bang process is supposed to be the origin of the "great wall structures" even BEFORE plasma is created along these structures.
So the speed of the galaxies to concentrate and form great walls is not an issue in the calculations.
For Quantum FFF Theory see: http://vixra.org/author/leo_vuyk
For posters of Q-FFF theory: https://www.flickr.com/photos/93308747@N05/albums/
For posters of Q-FFF theory: https://www.flickr.com/photos/93308747@N05/albums/
The splitting black hole big bang is supposed to be the origin of the "great wall structures" even BEFORE plasma is created. So the speed of the galaxies to concentrate and form great walls is not an issue in the calculations.
Below: Left 40% infra red CIBs according to Q-FFFmodel: dual splitting Galaxy Anchor Black Holes, starting to form stars in between. see also: https://www.sciencedaily.com/releases/2016/03/160310111846.htm