  We study correlation functions for extremal supersymmetric black holes. It is
necessary to take into account the strongly coupled nature of the boundary
supergraviton mode. We consider the case with ${\cal N}=2$ supercharges which
is the minimal amount of supersymmetry needed to give a large ground state
degeneracy, separated from the continuum. Using the exact solution for this
theory we derive formulas for the two point function and we also give integral
expressions for any $n$-point correlator. These correlators are time
independent at large times and approach constant values that depend on the
masses and couplings of the bulk theory. We also explain that in the
non-supersymmetric case, the correlators develop a universal time dependence at
long times. This paper is the longer companion paper of arXiv:2207.00407.
