I was told by Dish that the Hopper will record 6 shows or 5 and watch one at the same time.
That's not correct, you may have misunderstood or I misunderstood your post. What they said was you can record 6 shows, or record 5, and watch one LIVE not recording
at the same time. If 6 shows are recording you can watch any of them you want.
Without Prime Time there are three tuners. It's no different than any other DVR. You can only watch three channels, in any combination of recording and watching not recording. So if you record two, you can watch one not recording, and of course either of the recording ones. If you record one channel, you can watch any two other channels not recording, or watch the recording one, etc.. etc.....
Keep mind, if all tuners are recording, each
Joey or Hopper can watch any of the recording channels, OR can watch something that was recorded at another time. Many people are forgetting about that.