He's got a mind of his own. [It's a good excuse and off they go. He's keeping mind to walk slow enough any time Milla finds something of interest (or to wrangle Baymax from wandering off any time something catches his attention) but the conversation still interests him.]

I don't see why not. That sounds like it'd be even better since you can't predict what monsters do. [...but he's smart. And he questions things, so he tilts his head.] "Didn't"?