Jon's clearly surprised, and anything that he might've been expecting, preparing to say, fell short. This one statement was already a hell of a lot more than he could've ever anticipated from Daisy, much less the notion of additional ones. Avatar solidarity wasn't something he'd ever experienced--- Avatar hostility was more par for the course, if his last run-ins were anything to go off of--- but he sure isn't going to be caught complaining.

"Oh! I mean--- if you're sure?" He stumbles over his words, only just restraining an eagerness, though it was still just beneath the surface of his surprise. "Let me know about the nightmares or lack thereof, regardless of any old stories that come afterwards. It's something I really ought to be aware of."