Instead of push segue how to replace view controller (or remove from navigation stack)?

Question

I have a small iPhone app, which uses a navigation controller to display 3 views (here fullscreen):

Answer 1

Here a quick Swift 4/5 solution by creating a custom seque that replaces the (top stack) viewcontroller with the new one (without animation) :

class SegueNavigationReplaceTop: UIStoryboardSegue {

    override func perform () {
        guard let navigationController = source.navigationController else { return }
        navigationController.popViewController(animated: false)
        navigationController.pushViewController(destination, animated: false)
    }
}