"Do you understand?"

Phalanx is repeating the words almost before Robin is done saying them, but their (now big blue) eyes are holding fast onto Robin's. And there's a subtle shuffle of motion, almost a nod. They're listening and comprehending and agreeing as much as they can.

--Which is a good thing, because there's already something shifting about their face again. In a few blinks, their eyes are much more hazel than they had been a moment before.