No, of course not - the boom is flexible and needs to be, alsoit needs to decouple instantly in case of any sort of abrupt moves by both planes, but probably especially by the receiving plane.
Plus: the whole process is of course a bit abstracted, since this is not real life. It is not more and not less than: move into the right position as indicated by the tanker's position lights, hold your plane there, the boom operator moves it into the refuelling port and you will take fuel. There is a bit of maneuvering leeway, but move to far and it will decouple.
Again: take an F-15 or A-10 now, move in with a bit of lateral distance, but still inside the refueling parameters and the boom operator will connect.