// Here's a reproducible example:

import SwiftUI
import Combine

struct ContentView: View {
    var body: some View {
        NavigationStack {
            VStack {
                Combiner(current: Screen1(), next: Combiner(current: Screen2(), next: Combiner(current: Screen3())))
            }
        }
        .padding()
    }
}

protocol FlowRepresentableView: View { }

extension Never: FlowRepresentableView { }

class Workflow: ObservableObject {
    let proceedPublisher = PassthroughSubject<Void, Never>()
}

struct Combiner<Current: FlowRepresentableView, Next: FlowRepresentableView>: FlowRepresentableView {
    @State var current: Current
    @State var next: Next?
    @State var isActive: Bool = false
    @StateObject var workflow = Workflow()

    init(current: Current, next: Next) {
        _current = State(wrappedValue: current)
        _next = State(wrappedValue: next)
    }

    init(current: Current) where Next == Never {
        _current = State(wrappedValue: current)
        _next = State(wrappedValue: nil)
    }

    var body: some View {
        Group {
            if let next {
                NavigationLink(destination: next, isActive: $isActive) { }
                    .isDetailLink(false)
            }
            current
        }
        .onReceive(workflow.proceedPublisher) {
            isActive = true
        }
        .environmentObject(workflow)
    }
}

struct Screen1: FlowRepresentableView {
    @EnvironmentObject var workflow: Workflow
    var body: some View {
        Text("\(String(describing: Self.self))")
            .onTapGesture {
                workflow.proceedPublisher.send()
            }
    }
}

struct Screen2: FlowRepresentableView {
    @EnvironmentObject var workflow: Workflow
    var body: some View {
        Text("\(String(describing: Self.self))")
            .onTapGesture {
                workflow.proceedPublisher.send()
            }
    }
}

struct Screen3: FlowRepresentableView {
    @EnvironmentObject var workflow: Workflow
    var body: some View {
        Text("\(String(describing: Self.self))")
            .onTapGesture {
                workflow.proceedPublisher.send()
            }
    }
}


struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}