There is a gap. With light switch off - both halves are out. With light switch on - both halves are hot. The strange thing about the outlet is that I have found that the one wire group is from a different circuit. I turned off breaker that controls my hall light and I no longer found a shock.
One black wire is definitely connected to the box.
Why would a wire from another circuit be connected to the outlet? Especially if it is not going to give any kind of power.