At the end of the episode Delo Jones (Jimmy Dean) is walking away and in the top left corner you can see a condensation trail from a plane. Planes were not around in this time period.
Daniel Boone is seen firing his rifle after which he fires a second shot with only approximately 2.5 seconds having elapsed between shots. It is generally believed that fifteen to twenty seconds is required for just the reloading of a rifle of this type. This is all done in the dark of night with possibly a small amount of moon light. In addition he does this without moving his rifle from the firing position. Even Daniel Boone could not have pulled off such an impossible feat.