Breaks to the flow of time are a new thing for Bruce -- which seems to be a reoccurring thing what with the discovery of aliens and metahumans and who knew what else out there. Not that he knows that's what happened here yet. As it is he's just confused.

Especially because this kid is speaking to him like he knows him. A fan of some sort, maybe? He's not the sort of person people should want to emulate -- being a hero isn't "cool", it's a necessary evil in a city like Gotham.

"I don't know what you think our relationship is but if you keep going after people like that you're going to get yourself killed."

The voice is critical, and a little condescending. As far as he knows this is just some punk kid, after all.