In some of Ragna's combos in the combo thread, such as 2B/6B/5B, 3C, 5D (DC), 6A (HJC), j.C, j.D (JC), j.D, j.214C, dash 5D, 22C, a 6A is used after the 5D DC. However in others, like 5B, 3C, 5D (DC), 5C (HJC), j.C, j.D (JC), j.C, j.214C, 6D, j.D (JC), j.C, j.214C, dash 5D, 22C, a 5C is used there instead. Since the 5C has a greater reach, why is 6A used in the first combo?