Contains spoilers from DC's Legends of Tomorrow Season 5, Arrow Season 8 Episode 8, The Flash Season 6 Episode 9, Batwoman Season 1 Episode 9 and Supergirl Season 5 Episode 9.
Crisis On Infinite Earths was, without a doubt, the major universe-altering spectacle that both the Arrowverse's creative team and its fans wanted it to be. A triumph that pushed the boundaries of television, it marked the final time that Arrow would join The Flash, Legends of Tomorrow, Supergirl, Black Lightning and Batwoman for one of the annual crossovers and ultimately set up the ending of that show in the process.
An event that fans had been waiting five years to see, there was a lot of anticipation heading into it, as we all hoped that it would succeed - and it goes without saying that it absolutely did, changing the face of the multiverse forever.
That being said, there were a number of things that, although they didn't take away from our overall enjoyment of Crisis, didn't necessarily add up either - some of which were rather baffling. With that in mind, let's take a look at some of the huge crossover's most glaring plot holes.