I'm confused slightly about the episode, and Superboy in general. When Clark was affected by the green kryptonite at the Luthor mansion, Connor used his heat vision to explode the rock.
But previously, if green kryptonite was heated to a certain point, it would turn into black kryptonite...
...Which then leads me to this, if black kryptonite was used on Connor, would that effectively "split" Lex and Clark... since that is what would usually happen to a kryptonian.