No... You see, main lines would never be able to serve
everywhere. So they might need feeder operators to get the
connectivity if they decide not to if they do not have the
resources. That's why there's the term transhipment ports
Pt 2 is pretty simple... If the main lines attributes to say 60% of
your load factor, if they use Singapore as their hub, wun you need
to use more of Singapore's port facility to suit to their
needs?