Time was a complex thing. It wasn't linear as everyone believed. However, what it did have were penultimate nodes in history, checkpoints, if you will, that had to be passed. The details could be scrambled as they pleased, however these keynotes in history must be met without fail.
How could the fall of the mortal plane not be one of these keynotes?
Luna and their daughter had already informed Dyon of their speculations. They believed that whatever it was that sealed Dyon's loss in the previous timeline most definitely occurred during this first phase.
In that case… Didn't that also mean that this first phase was the penultimate moment?
Dyon found it all quite amusing.