Could someone please explain the difference between a “reference” and a “pointer” in this case?

Question

When I read litb answer to this question, I learned that passing an array by reference allows us to obtain its size. I just played little bit with code, and tried to pass a

Answer 1

I think it is due to the C++ Standard 4.3:

An lvalue of function type T can be converted to an rvalue of type “pointer to T.” The result is a pointer to the function.