Could four battleship guns be arranged as a giant Gatling weapon?
Short answerThe logistics and machinery would be extraordinary, while the rotating arrangement would not meaningfully improve loading or firing performance.
NotesThe machinery behind the barrels presents the main obstacle. A battleship-caliber Gatling arrangement would need enormous structures to feed, load, rotate, and control several heavy guns. Those additions would not remove the shell-handling and safety limits that govern rate of fire. The result would be extreme technological and logistical cost for little practical gain.