Kind of. Both the Ferengi and Borg episodes in Enterprise were careful not to name them, so in-universe it could be explained away as having never been connect

Kind of. Both the Ferengi and Borg episodes in Enterprise were careful not to name them, so in-universe it could be explained away as having never been connected. Same as how the Borg first contact was officially in TNG, but humans and Borg had interacted years earlier (the Hansens went seeking them out before TNG due to rumours) and time travel shenanigans in the First Contact movie. Also the Enterprise Ferengi were pirates/raiders, very different from later depictions, which would make it more difficult to connect them later.