The first meeting of the two Flashes, post-Crisis, as shown in DC UNIVERSE: LEGACIES #4, a great ten issue mini-series that showed the heroes of the DCU over fifty plus years, from World War Two all the way up to INFINITE CRISIS. And, as the series finished in April 2011, all of it was thrown away six months later after FLASHPOINT and the New 52 reboot. Hard to believe that was all nearly 15 years ago.