Warning: SPOILERS for Superman and Lois season 2.
Superman and Lois season 2 continues to ignore the larger Arrowverse, acting like there are no other heroes when Superman goes missing. This has been an on-going problem for the series despite nominally being a spin-off of Supergirl. However, apart from a cameo by ARGUS Agent John Diggle in its freshman season, Superman and Lois has not acknowledged any connection to the CW's other superhero series.
The Superman and Lois episode «30 Days and 30 Nights» opened with an intense sequence in which Superman chased cult leader Ally Allston into another dimension. After the title card, the episode entered into a montage of the month that followed, showing an anxious Lois Lane going to bed alone and being unable to sleep, intercut with scenes from news broadcasts covering various disasters. The reporters and news chyrons all asked the same question as Clark Kent's family, "Where Is Superman?"
Related: Superman & Lois Makes The Arrowverse's Justice League Problem Even Worse
One month later, John Henry Irons had rebuilt his Steel armor and was helping fill Superman's shoes. Yet apart from his acting to avert an airplane crash (which prompted a headline asking if there was a new "Man of Steel") no mention was made of other heroes stepping up to protect the world in Superman's absence. This continuedSuperman and Lois' disturbing tendency to ignore that there are other superheroes in its world besides Superman who could be called into service in his absence—particularly his cousin, Supergirl.
The Crisis on Infinite Earths event in 2020 condensed many of the superhero series adapted from DC Comics into a single shared world, dubbed Earth-Prime. This was meant to facilitate more frequent
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