Estinien is so mystified by the idea of 'free air' that he only contemplates it for a moment before brushing it off as a turn of phrase. It being literal would make no sense, after all - probably just something to do with having freedom of movement, he guesses.

Whatever is going on in Amos's home realm, it must be a real mess, in ways Estinien has no context for. He's not sure what to say about that, when it comes down to it. Probably nothing, given how casually Amos relates those details.

Instead, he just nods his head to Amos's correct observation about Himeka, and then focuses on contemplating the logistical issues he's brought up. Normally, Estinien would have assumed they'd use the Horizon to talk, but...

"Have you returned to the Horizon?" he asks.