I guess there is no way of ever knowing for sure if that was the case, but I know there's plenty of theories about how different choices can cause different timelines or possibilities to occur or not occur. It's a bit over my head most of the time, but I guess it's not out of the realm of possibility that something did or did not happen that didn't meld right.

Likewise, I don't think we were really 'supposed' to have two sets of Signers here, but like I said, there are some strange dimensional reasons we have two sets.