Conflicting Communicative Behavior in Split Brain Patients

i think that this split brain stuff is is the most concrete stuff that i could kind of point to to talk about. I just see no progress ever of somebody trying to investigate the silent hemisphere. There's one paper which is called conflicting communicative behavior in split brain patients support for dual consciousness by victor mark and there's an old paper with one of these patients. He was able to get this patient to verbally disagree with herself so he would ask her questions about what's in your hand or you know can you feel something in your hand  and she would essentially argue like yes no yes no and then would yell at herself that something is right and something is not right.