I don't understand why Aizen bothered to warn The Don at all. He didn't hesitate to walk by normals killing them in the process, what's the deal? Because they were no-names? It just seems to me like they fucked up his character in this moment-unless he was just mildly curious because the named characters can remain in one piece with him that close. I would think he wouldn't stop to stare at the yard trash when his objective is so near.