After Misato’s lines, there is a pause before Ritsuko starts to speak off-screen.
MISATO:“Yes, sir.”
---short pause ---
RITSUKO (OFF):“You’ve come up with yet another...”
Ritsuko is behind Misato on the escalator, looking exasperated.
RITSUKO (ON):“...reckless plan, I see. Operations Chief Katsuragi-san”