This episode being set in a fantasy world is fun and all, but the story being told from Dr. Cox's perspective makes no sense. As Dr. Cox retells the story of his day through the fantasy allegory, there are many things that are not in line with Dr. Cox's character, and wouldn't be told to someone hearing about his day in the hospital. Like, for instance, why would he care about J. D. and Elliot discussing their "almost kiss"? He has had several rants throughout the series saying how little he cares about their relationship, or any relationship of JD's. He probably wasn't even listening to JD or Elliot when they discussed this, he certainly wouldn't bother retelling it to Jack. While he often cares about certain things more than he lets on, this particular apathy seems pretty sincere.
He also retells parts of the story that he wasn't around for, things he would have no knowledge of. Some of these parts he may have figured out on his own, as they are essential to his own storyline, but other parts are irrelevant tangents that he wouldn't have known about at all.
And thirdly the prophecy The Knight gives of "you must remember what you heard when you weren't even listening" makes sense in the fantasy version of the story, but why would the attending Dr. Cox ever say something like that to a fellow doctor looking for help with a patient? Did he already know the answer? Did he overhear the interns discussing Wilson's Disease? If so, why wouldn't he just tell JD and Elliot it was Wilson's Disease right away to further the chance of saving the patient? If he, in fact, did not know it was Wilson's Disease, what would even cause his to say this "prophecy" to Elliot and JD in the first place?
All of these things together cause his retelling of the events in the hospital to young Jack pretty confusing and nonsensical.
He also retells parts of the story that he wasn't around for, things he would have no knowledge of. Some of these parts he may have figured out on his own, as they are essential to his own storyline, but other parts are irrelevant tangents that he wouldn't have known about at all.
And thirdly the prophecy The Knight gives of "you must remember what you heard when you weren't even listening" makes sense in the fantasy version of the story, but why would the attending Dr. Cox ever say something like that to a fellow doctor looking for help with a patient? Did he already know the answer? Did he overhear the interns discussing Wilson's Disease? If so, why wouldn't he just tell JD and Elliot it was Wilson's Disease right away to further the chance of saving the patient? If he, in fact, did not know it was Wilson's Disease, what would even cause his to say this "prophecy" to Elliot and JD in the first place?
All of these things together cause his retelling of the events in the hospital to young Jack pretty confusing and nonsensical.