Einstein-Podolsky-Rosen non-separability and Feynman non-locality

It is argued, using the Feynman transition amplitude for the annihilation of an electron-positron pair into two photons, that the Einstein-Podolsky-Rosen non-separability (especially when discussed in polarization terms) and the Feynman non-locality (as exemplified in the case of the electron-positron system) are indeed the same concept. This gives strong support to the view that the EPR correlation occurs through the pair of timelike vectors joining the measurements to the point of severance of the subsystems.An interesting byproduct of the argument is that, given the four energy-momenta and polarization states which are involved, the overall system is in general neither P- nor C-, but is PC-invariant, so that the generalized Landau symmetry concept could have been suggested by quantum electrodynamics.