I can't recall an AG ever personally issuing an indictment, conveing a GJ, etc. The question of recusal is more one of being informed than of "driving the bus." AG have been known to spike or encourage specific investigations or prosecutions, but are not the hands on people.
Sessions is out of the loop if the case is vs. the Trump campaign, or vs. Hillary, or vs. the Clinton Foundation. If the case is vs. anybody else, he is or can be "in the loop," to whatever extent he wants to be.
Well since NOBODY is investigating hillary or the CF he doesn’t have jack to worry about for the moment. or I am just being hyper cynical. :-0