In the Circular Restricted Three Body Problem, natural paths exist between periodic orbits or the libration points that have negligible cost. These are commonly known as free transfers between libration point orbits. These paths also supply transfers between whats-so-called "libration point gateways".
However, I was wondering what is the difference between "transfers between libration point orbits" and "transfers libration point gateways" ? Aren't they the same?