This episode was produced before the episode "Hidden Agenda" but aired afterwards, which is why Maxine doesn't know Matt, even though she used a cover story about him in the last episode. In this episode she still doesn't know Terry is Batman.
Carl Lumbly voices his second character in the DCAU. The first was the Mayor of Metropolis in the Superman: The Animated Series episode "Speed Demons", the third will be J'onn J'onzz on Justice League and Justice League Unlimited, and the fourth will be Anansi in the Static Shock episodes "Static in Africa" and "Out of Africa".