Thanks for your reply, but I looked at that scene over and over again. Avon and crew are parked at the corner, enjoying some fast food one of his crew members just delivered. Marlo’s crew are on the other side of the street watching them. A lady or streetwalker passes by, looking both ways as she crosses the street. She didn’t exit the car, acknowledge the Barksdale crew or do anything out of the ordinary. I couldn’t even tell if this was Dion or just some round-the-way-girl. I think Marlo killed all new ‘contacts” just to eliminate any suspicion. He’s a psychopath.
The lady crossing the street is Dion, as she was to meet Marlo at that spot before she "left town". And with her constantly looking back at the truck and them throwing the food wrapper out the window, Chris knew something was up.