Background

I have a Router module that forwards request to other routers.
In this router I have a pipleline comprised of plug(:match) and plug(:dispatch).

defmodule Example.Router do
  use Plug.Router

  plug(:match)
  plug(:dispatch)

  forward("/check", to: Example.Route.Check)

  get("/", do: send_resp(conn, 200, "router"))
end

In this second module I have the same pipeline:

defmodule Example.Route.Check do
  use Plug.Router

  plug(:match)
  plug(:dispatch)

  get "/", do: send_resp(conn, 200, "ok")
end

Questions

The issue I see here is that I always seem to need plug(:match) and plug(:dispatch) in all Plug.Routers. So I have the following questions:

1. Is this really necessary?
2. Do all routers need to have a pipeline in the same file they have the routes?