Keltham quietly eats his food for at least the first ten minutes. Insofar as his brain isn't just plain resting, it's going back through what he said to check whether he said anything spectacularly stupid.
He notes, absently, the Chelish girls having conversations in a language he doesn't speak. It doesn't seem particularly worrisome by comparison with people in Chelish Governance wearing intelligence headbands having conversations where Keltham totally can't see them at all; they're probably discussing strategies for seducing him or something.
...should he briefly rapidly cover genetics and deliberate heritage-optimization next? It's got a long time lag before it's useful, but that might be all the more reason for Cheliax to get started on it early.