Real
In the hell of their world that could have been, Oz and Giles fought side by side, buried the dead, and struggled to save the living. In the times when they could, they would fall, exhausted, together into a chair, a bed or couch. Find each other's, hands, lips, bodies. Try to chaise away what wasn't real and what was and could never be changed.
In the real world that was, Oz left and struck out on his own wandering for many years. Giles went on alone, fighting the good fight, making the sacrifices and the hard decisions, burying the dead. He worked until he couldn't stand it, until every thing from his mind, heart and soul was gone. Until every part of him screamed for it just to end. On that day, Giles opened his front door to find Oz. Standing there.