"So." Luka pauses, slightly hesitant to continue. "So you're the robot?"

I mean, she was making weird whirring and humming noises yesterday - it's not a totally weird thing to ask out of nowhere! That, and she's probably aware of what kind of information he'd have access to at the bridge.

"Your original purpose was to protect the Protector then, huh... soooo, why does he go by that title? It would suit you more."