"Several decades. Long enough that all the Bats have been retired for at least two of them- though there weren't ever as many of them as others here are used to."

She watches for his reaction. Everyone else here- except her- has been a hero, so she's not surprised if he is, too. He's definitely not a villain; Jason wouldn't have told him about the safehouse. But what she's said about the Bats is hopefully common enough knowledge, or would be after decades to speculate.