Every since I realized that the first four main story arc quests took place almost entirely in echoes, all options are on the table.

Of course, there's all sorts of reasons why it's probably not the case that 1.X was all an echo, but I think the strongest is just my high level of faith that no one on the team that crafted this game's lore, which is high up there on my list of FF favorites, got up in the middle of a lore-building workshop and said,

"I know a good twist for the Echo. Has everyone here seen Dallas?"