Oliver simply stared at Marco for a moment, not even really bothering to process the words that were coming out of the young man's mouth. He wasn't sure what had happened prior to him showing up a minute ago, but it had been pretty obvious that Marco wasn't exactly in his right mind at the moment. He'd like to say it was the first time he'd been threatened like that, out of fear and desperation, from someone who likely had absolutely no inclination to go through with it, though it had been a couple decades. It helped that Marco wasn't a soldier. Wasn't trained or carrying. Wasn't putting any of his own people at risk for the moment.
Oliver waited a minute, letting the quiet sink in, not moving forward or back. He didn't anything more than patiently dry about the threats, both hands braced on the railing in full view. "Are ya done?"