I've enable Language Fallback and everything works as expected on CM, but things are not working out on CD.
I've checked the config to be the same on both CM and CD (/App_Config/Sitecore/CMS.Core/Sitecore.LanguageFallback.config)
Languages in Sitecore have the fallback language setup and (re)published.
Other settings I didn't do. Am I missing something?