"Siblings makes for an easy analogy that people tend not to question." Because it's not really a sibling-like relationship that they have, but saying they're as close as usually means no further inquiries. "Plus, what we are to each other isn't anyone else's business."

And not worth expounding on further, at least verbally, in a place where he doesn't know if they're monitored or not. At least with the Atroma they knew they were recorded and knew to speak carefully; he does not know enough about this place but feels it prudent to take the same precautions.

He nods along at her listing; he doesn't recognize any names other than Wanda's, but knows that Sansa knows a little of his memory issues and how a lack of recognition doesn't mean much when it comes to him. But even so, it does seem a mix of people from the Fleet and others, which is important information. "Who else from the Fleet?"