Luke has had the central part of his brain which connects the two halves together blown away completely, something that complex is not going to grow back overnight and until it does he's acting like someone who's been lobotomised. Connor's mum on the other hand conjures up a mental picture of torn fishnet stockings, a too-small leather corset and a bent cigarette dangling out the side of the mouth as she leers and gets off on the distress she's causing the desperate Jack as much as the sex act itself.......Brrrrr!.
Wait, how did Alice not hear the helicopter in the earlier episode? They're bloody loud when you haven't got traffic noise and amplified music to drown them out...