Quote Originally Posted by Warlock View Post
On a less critical curiosity in the 1.0 intro when the Elezen says "Oh look who's back from his reverie" is another way of saying "Hey look who just came back from an Echo" since as Ferny stated all 3 of them possess it?
Yes, that's pretty much it. He's poking fun at derplander, like saying "oh look who came back from his little stroll in the past/echo".

I get this feeling that they just met Derplander, as the elezen only refers to him as "midlander" instead of by name, but they know enough about the echo to know that he has it, and that he was drawn into one while sitting at their table.