Try wrapping the `fetch()` in `Date.now()`s like so, then check the `x-elapsed` header: ```ts const

const start = Date.now();
let response = await fetch(new Request(url,
  {
    body:request.body,
    method:request.method,
    headers:request.headers,
    redirect:request.redirect,
  }
));
response = new Response(response.body, response);
response.headers.set("x-elapsed", Date.now() - start);

const start = Date.now();
let response = await fetch(new Request(url,
  {
    body:request.body,
    method:request.method,
    headers:request.headers,
    redirect:request.redirect,
  }
));
response = new Response(response.body, response);
response.headers.set("x-elapsed", Date.now() - start);