what if Chapter 7 is a mix of all previous chapters, so each chapter has a segment in this one, then the last one is the Chapter 7 segment, (which would be the longest segment) and it has pieces of the previous 6 mixed in as well, and if you have all the shadow crystals, you have to refight the secret boss of each segment, then fight the last one in the 7th segment, which requires all the other 6 shadow crystals to fight