src/Http/Middleware/Request.php
protected function sendRequestThroughRouter($request)
    {
        $this->app->instance('request', $request);

        return (new Pipeline($this->app))->send($request)->through($this->middleware)->then(function ($request) {
            return $this->router->dispatch($this->alexaRequest);
        });
    }
protected function sendRequestThroughRouter($request)
    {
        $this->app->instance('request', $request);

        return (new Pipeline($this->app))->send($request)->through($this->middleware)->then(function ($request) {
            return $this->router->dispatch($this->alexaRequest);
        });
    }
Send through our custom router

@param $request

@return Response