Picture it: A group of ancient gods walk into a bar to put on a variety show, and two of the deities—the oldest and the youngest—have a falling out of epic proportions. A question similar to “what were you the god of, again?” is posed in an alley, and all hell breaks loose. This sort of stuff happens on American Gods…
Source: https://io9.gizmodo.com/american-gods-borrowed-some-magic-from-the-marvel-cinem-1834047266