To tell you the truth, I don’t know. This is the only Earth I’ve ever known. But… it sounds like we might be a little further along technologically.

[They’ve already extended their reach beyond their solar system, for one. It’s how they found the Ingress.]

We could be your Earth at a later point in time. We could be, as you suggested, another version of Earth entirely. I suppose anything’s a possibility with multiple universes involved.

[There's a brief, contemplative silence. And then, with sincerity.]

I’m sorry if this isn’t the homecoming you were expecting.