[Considering his genetics, William is a pro at giving The Look where needed. Now it isn't needed, and he's already nodding slowly at the mention of the Winchesters. He's not really following the whole cage business, but it's not something he's going to say out loud, not to mention it being none of his business to pry.]

I think I've spoken to Sam before now, once, but that's about it. I can't say if they're both here, or still here even. I'm sorry that you had to lose two brothers that way, though.