  We calculate all neutral vector two-point functions in Chiral Perturbation
Theory (ChPT) to two-loop order and use these to estimate the ratio of
disconnected to connected contributions as well as contributions involving the
strange quark. We extend the ratio of $-1/10$ derived earlier in two flavour
ChPT at one-loop order to a large part of the higher order contributions and
discuss corrections to it. Our final estimate of the ratio disconnected to
connected is negative and a few % in magnitude.
