You misunderstand how a for loop operates. You can either wire a number to the N terminal or you can wire an array into it with auto-indexing turned on. With an array input, the for loop will iterate equal to the size of the array. When you wire both (a practice I do not recomend), the for loop will iterate to whichever is smaller - the array size or the N terminal. Both of your for loops on the left side is creating arrays with only two elements. I suspect that what you need in both of them is a shift register instead of exiting the for loop with auto-indexing turned off.
