Loki Disney Plus - Trailer

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So, here's a question that might be a bit bigger.

We already know about the dark dimension. The Ancient One already talks about multiple dimensions. I forgot how she stated it in Endgame when talking about the timeline branch being an alternate reality. We know there is a sacred timeline and the TVA does their best to prune it and keep it singular.

So, the question.

Do multiple dimensions all operate on the same timeline? I.e. is the timeline, and split realities,.different than a 'normal dimension.

Does a split in the timeline create new dimensions or alternate versions of that dimension.

Like, are they splitting that hair?
so TIME is the overall controlling force - like it's a river that everything proceeds down uniformly and branches are rivulets that the TVA quickly dams and drains?

i think my question would still hold that a branch timeline wouldn't alter the dna of a variant (at least that has not been hinted at in any way i can remember)
i think for that to work the infinity stones would be interdependent on the time stone, but we've seen them all work independently

i think we have to understand that, from what we've seen, the 'sacred timeline' is propaganda