Of course Greg knew he was there, he was incredibly attuned to this man. Even still. When he appeared Greg looked closely at him, there was something wrong but he wasnt about to tell Greg what it was. He did look annoyed for some reason though.
"Kevin" Greg's voice snapped in commandment immediately, "Come here and apologise to Jamie and myself right now. That attitude will not be tolerated. You are not a petulant child"