"Not much. Their actions still don't add up. And don't make sense. Why report something you do to yourself?"

Damian might be a trifle frustrated by the whole situation. But he is frustrated quietly, his attention still partly on the house they're watching.

Beat.

"And, while they keep on doing what they do, they don't... extend it to friends or family."

Usually, at least some of the types they are watching would be feeding somebody else what they're taking. Offering it to friends, coaxing girlfriends to take it...

... wouldn't they?