Draco’s office had no windows and he effectively lost track of time. Noticing the hour, he flooed into his flat and set out his best suit. Earlier in the afternoon he had met again with Granger. He had some questions about the blueprints she left in his office and a few suggestions to make the escape routes more efficient. She must have felt satisfied with the homework she gave him and told him the other half of the night’s activities. Potter, Weasley and Shacklebolt would infiltrate the warehouse where Hammond kept the Dark Objects and baby dragons they were selling. That was the other use of the earpiece she mentioned in his office. It would allow them to keep in contact with each other.