How have batman and superman collaborated in comic storylines?

The only verified information supplied concerns Superman, who is a superhero created by Jerry Siegel and Joe Shuster and first appeared in Action Comics #1 in 1938. This source confirms Superman’s role, origin, and cultural impact but does not mention Batman or any joint storylines between the two characters. Because the knowledge graph and the Wikipedia excerpt contain no references to Batman, no collaborative narratives can be confirmed. Without additional evidence, it is not possible to describe any such collaborations. Therefore, based on the available data, a Batman‑Superman partnership cannot be substantiated.