Viator, what you fail to realize, is that time can be compressed.
"But time is infinite!!!"
So? It's a Final Fantasy, and the compression would be far from the most outlandish law defying incident.
Like magic and summons for instance, how are they somehow able to vomit all over the laws of the conservation of matter and energy?
According to you, using magic and summons must not be possible. Well the time thing is the same deal, and judging as how in the game they say "time compression" about 69,000 times, and "time absorption" once, I'd say it's fair to assume "time compression" is the right term.