指针问题，数组第二个位置与另一个数组中的第一个位置相同

I don't understand why the if statement: &*accountslist[1] == &*unameslist[0] is true. What is going on here? Is the problem with my realloc? Also, when I make accountlist[1] = NULL it seems that unameslist[0] also gets set to null. This makes me think that for some reason they end up pointing to the same location. I don't understand why the if statement: &*acco