Securing Pangolin + Newt with Multi-Network Docker Stacks

New to Pangolin, coming from traefik. See below how I separated my networks.

I need a little help to understand how pangolin, gerbil and a newt instance I have set up on a remote server do tie into this.

Like, do I add pangolin, gerbil and traefik to the pangolin network? So basically (external net) of traefik gets replaced with pangolin?

Does the flow now go: pangolin => traefik => app1?
How does the remote newt instance tie into this then?

Happy to open my own thread if this is out of scope for this post.

┌───────────────────────────────┐
│           Internet            │
└───────────────▲───────────────┘
                │
        ┌───────┴────────┐
        │     Traefik     │
        │  (external net) │
        └───────┬────────┘
                │
   ┌────────────┼─────────────────────────┼────────────┐
   │            │                         │            │
┌──▼──────────────────┐ ┌──▼──────────────────┐ ┌──▼──────────────────┐
│        App1 Front    │ │        App2 Front    │ │        App3 Front    │
│      (traffic_App1)  │ │      (traffic_App2)  │ │      (traffic_App3)  │
└──────────────────────┘ └──────────────────────┘ └──────────────────────┘
       │                     │                       │
       │                     │                       │
       │                     │                       │
┌──────▼────────────────┐ ┌────▼────────────────┐ ┌────▼────────────────┐
│      App1 Database     │ │     App2 Database   │ │     App3 Database   │
│   (App1_internal)      │ │   (App2_internal)  │ │   (App3_internal)  │
└────────────────────────┘ └────────────────────┘ └────────────────────┘