Dismiss multi view controllers

a.swift

//: Playground - noun: a place where people can play

import UIKit
import AVKit
import PlaygroundSupport


class NCB: UINavigationController {
    override func viewDidLoad() {
    }
}

class VCC: UIViewController {
    override func viewDidLoad() {
        view.backgroundColor = .orange
        
        DispatchQueue.main.asyncAfter(deadline: .now() + 3) {
            self.navigationController?.dismiss(animated: true, completion: nil)
        }
    }
}

class VCB: UIViewController {
    override func viewDidLoad() {
        let vcc = VCC()
        view.backgroundColor = .green
        DispatchQueue.main.asyncAfter(deadline: .now() + 3) {
            self.navigationController?.pushViewController(vcc, animated: true)
        }
    }
}




class VCA: UIViewController {
    
  
   override func viewDidLoad() {
        view.backgroundColor = .yellow
        let vcb = VCB()
        let ncb = NCB(rootViewController: vcb)
        DispatchQueue.main.asyncAfter(deadline: .now() + 3) {
            self.present(ncb, animated: true, completion: nil)
        }
    }
}



let vca = VCA()

PlaygroundPage.current.liveView = vca
PlaygroundPage.current.needsIndefiniteExecution = true