@marcus: thankyou for clarifying it and yes I saw it hiding in another thread in the archives. @pervect: thanks for your explanation i can see the flaw in the idea I posted in the first post.
Thanks PF!
Thanks lol, so there is both absolute rest and absolute simultaneity?
And I was wondering if you could clarify why "Special relativity symmetries do not apply globally to solutions of GENERAL relativity, such as the standard LambdaCDM model cosmology that is normally used."
Thanks.