  Using a novel relation between the parity even and odd parts of a correlator,
we show that the 3-point function of conserved or weakly broken currents in 3d
CFT can be obtained from just the free fermion (FF) or the free boson (FB)
theory. In the special case of large $N$ Chern-Simons matter theories, we
obtain the correlator in terms of a coupling constant dependent ``anyonic
phase" factor. This anyonic phase factor was previously obtained in the
$2\rightarrow 2$ exact S-matrix result and is consistent with strong-weak
duality. By varying the coupling constant the CFT correlator interpolates
nicely between the same in the FF and FB theories.
