"Denying you the chance to what? To leave your jobs and basically abandon our house and our Chocobos to help me look? What would that have accomplished?" Gladio thinks it all makes sense - that the only option was for him to leave by himself.

"This is Iris, Noct. I'm not stopping for anyone or anything. If they don't have information I'm moving on." He's eyeing the airship, itching to get on so it can take the hell off, and Gladio looks at Noct with blazing eyes.

"Besides, I can handle myself just fine. Managed to survive Gilgamesh after all. So enjoy following me around because I'm not slowing down for your always-tired ass."

Maybe later he'd regret what he's saying, but right now he just wants to get moving and all this standing around is wasting precious time.