"Not in person," he said. "I talked to them over the journal network when they first showed up, Booster more than Beetle, though. He mostly just wanted to know if there was a Blue Beetle on the League here."
Nightwing hadn't really been able to get a clear idea on what they were like, but he was pretty sure they could probably scratch them off of the Potential Villains list. Which just left him wondering why Batgirl was asking him about them.