Complex sentence: Each time Dick returns to the real time he is more confused, throughout he is unable to interact with Roger or Isolda, any attempt brings Dick crashing back to the present in a state of nauseous exhaustion.
Split into simpler sentences: Each time Dick returns to the real time he is more confused; throughout the experience he is unable to interact with Roger or Isolda. Any attempt to do so brings Dick crashing back to the present in a state of nauseous exhaustion.