the new split timeline is off a bit, the split occured some time before the kelvin interescted teh narda.
this is evidenced by the one singlefact that in TOS the main view screen was not a window and was reinforced in Enerprise as not being a window as well. yet eh Kelvin had a window that needed to be Polorized before war. this single difference means that sometime beofre or after enterprise and before the Kelvin incident there was an even more suttle split in the timeline.