The reciprocation is startling in and of itself. The Knight goes stock-still, bewildered.

...They figure it's a thank you. Their first instinct is to bow back again, which would be strange. Possibly confusing Lemm back. Not necessary at the moment. They still can't help a sort of twitch.

Hopefully more smoothly than other times, they decide to push things forward. They lean over to pat Lemm's map aimlessly, lightly prompting.