Ok just compared batman vol 3 49 page 9 to 84 page 6…Catwoman is not there it’s just the joker and his injuries do not line up =) he has a nasty scalp wound (which bleeds a lot) something causing him to bleed from the mouth and no cut throat. the dead bodies do not match up eather. this also explains the square box. The Reverse-Flash actually brings Thomas Wayne to a point in time that changes history. he gets there around the time bruce pops the question to Selina. likely he gets there at the start of rebirth, thus creating a new timeline.