Split Time Or Moments Of Hyper-Time

In the Danellian timeline, Roger II survives the battle of Rignano in 1137 whereas, in the alpha timeline, Roger dies at Rignano so does one timeline split into two at that point? That is one way to describe this situation. In fact, that description fits, insofar as anything does, with the sequence of events recounted in "Star of the Sea."

However, I think that the simplest description of such imaginary scenarios is in terms of two temporal dimensions. Moment 1 of hyper-time contains the entire Danellian timeline whereas moment 2 of that second temporal dimension contains the entire alpha timeline. The two timelines are indistinguishable (except for a qualification that I will shortly make) until a crucial turning point during the battle. After that turning point, we date events in the Danellian timeline as 1137 etc whereas we differentiate dates in the alpha timeline as 1137alpha etc.

This means that, within moment 2 of hyper-time, someone can time travel from an alpha year to a pre-alpha year and can then change the course of events in that earlier year without affecting any events in moment 1. In fact, this happens. Time Patrol bases in 1137alpha send message capsules and probably also personnel to bases in pre-alpha years. Consequently, contact is made with Unattached Agent Komozino when she is in Eighteenth Destiny Egypt. She then travels to 18,244 BC to confer with Unattached Agent Manson Everard at the Pleistocene lodge. In moment 1 of hyper-time, none of this happens. Time Patrol bases in 1137 (which has not become alpha) do not send messages describing a temporal alteration to earlier bases. Komozino's mission to Eighteenth Dynasty Egypt is not interrupted. Everard's vacation at the lodge is not interrupted. Their careers continue in ways that are not known about in moment 2.

OK. I know that this gets complicated. In fact, I was just about to point out another anomaly which I now realize was a mistake on my part.