Jon:
Jon whispers "Let's let him pass by. See if there are others following."
The ranger moves forward (for him-- to your right), looks around (doesn't see you so far), studies the ground for a second--
--then looks to his left (farther from you than he is) and makes a hand sign. Dang, you don't even see anyone over there, but it seems like he does...
If you had to guess, the hand sign might've meant
No sign here, let's keep going.
Keep waiting/observing?
Meanwhile, Carlyle turns to Jade. "So, the red-headed Princess-- Janessa, was it? Is she from, the, ah, magical side of the family too?"