What about the sensors? Information recorded on these devices could lead to advances in technology. Well, that is the explanation offered by the people who are making these films. For me, this is believable. Airplanes and cars are equipped with black boxes that record data on the function of the vehicle and the human occupants. It might be probable that analogue devices were a standard component of starships. There might be a third black box which would record data on particulars located outside the vehicle, such as the environment and ships that might be encountered.
These films are separated not by six months; rather, they are separated by a year.