Seth nods. He doesn't mention that Gabe has a whole multitude of powers beyond that and is practically immortal. Just because he doesn't exactly need Seth's protection, like Seth needs Gabe's, doesn't mean he goes around spilling all his secrets. Especially given Gabe has never seemed particularly fond of the Doctor when mentioning him, and that might extend to Andrew too.

"Who do you know who's with the rebels, then?" he asks, changing the subject back to that. "So I know who not to immediately write off for being affiliated with them."