 The invitro tube Kochanski has is Lister himself, and at some point after the baby is born he will need to go back in time and leave him at the Aigburth Arms, writing "Ouroboros" on the box so he would be able to work it out at this point in time.Lister begins to try and come to terms with the fact that he is his own father, and Kochanski is not only his ex-girlfriend but also his mother, before realizing he needs to get the tube back from Kochanski.Unfortunately, as he runs to Kochanski to get the tube, the GELFs attack again and the link breaks with Kochanski stuck on the wrong side.