As a follow up from yesterday, I did play a little further in Radiant Historia, and I can confirm that Character XYZ who dies in timeline A is still alive and well even after timeline B passes A. This is all around Chapter 4 of the game, for those who are playing along. In other words that whole line the game feeds you about characters dying in both when they die in one is a big fat lie. Either that, or the power of the timeline fades in comparison to the almighty Plot Armor skills.
It’s possible they’ll explain why this was so later on in the game, but I still feel gypped. These writers don’t have their heads on straight.