[He can only stare at the Hobbit for a moment. Perhaps two. Brought together? Impossible, they couldn't have avoided seeing each other all these months. And even if they had, he can't have avoid Gandalf or Haldir or Idrial as well. One of them would have spoken of seeing him.]

Frodo, I have been here for near of seven months. We can't have arrived together.

[Legolas is pretty confused now.]

I've not seen you in over a century, Frodo. Since you left Middle Earth.