It's been noted how the Enterprise's return journey from Qo'noS to Earth takes just an incredible few minutes, something which should be impossible, right? Yet I think I may have a possible explanation for this. Just before the Vengeance catches up to them, Carol says her father has been working on a highly advanced new type of warp drive. Is it possible the Enterprise got caught in the Vengeance's warp field, dragging it along at a highly accelerated pace?