… and if you’d spent the day reading the documentation, it wouldn’t have taken a day to figure out. ;)

TBH, it’s a bit frightening how abstruse the controller interactions have become on iOS over the years. If you study the master-detail app template in Xcode, you’ll see that it gives the iPad *both* a split view controller *and* a navigation controller, and it switches between the two dynamically, depending on how the split view interacts with a compact dimension.

If you want to make your head hurt, you can spend another day figuring out how the machinery in the App Delegate and the MasterViewController, and the cross-linked navigation controllers in the storyboard all work together to do some very clever things. I particular like this comment in the helper method near the end of the App Delegate: