The Golden epilogue can only take place after the Golden, obviously.
But there's nothing stopping Arena from taking place after P4 PS2.
In GoldenEpilogue Yosuke make allure of the events of Arena in wich said epilogue Marie appears, and since P4 doesnt have Marie then P4A ONLY takes place after Golden.
Again P4 original is not part of the timeline anymore.
For crying out loud, the guy already agreed that P4G is the current canon.
All he is arguing is that nothing that happens in P4A requires that distinction. --- "My faith protects me. My Kevlar helps." Michael Carpenter - Death Masks Official Norn of the Shin Megami Tensei IV board