[ That concept he understands immediately. And he even gets what Callaghan didn't say about Abigail. Better to accept something long before that point, than to risk someone really important ...

He stays silent for a long moment, trying to think through all this. He understands, now, but that's not the same as forgiveness. Not by a longshot. ]

Obsessed with the kid who took you down, huh? ... Good thing they didn't know about Abigail or they would've known better.

[ Fortunately for Callaghan, Tadashi was never ever a "kid" in Hiro's eyes, so he doesn't make the connection. ]