Youtube in React: consecutive requests in saga

watch.js

export function* fetchWatchDetails(videoId) {
  let requests = [
    buildVideoDetailRequest.bind(null, videoId),
    buildRelatedVideosRequest.bind(null, videoId),
  ];

  try {
    const responses = yield all(requests.map(fn => call(fn)));
    yield put(watchActions.details.success(responses));
    yield call (fetchVideoDetails, responses);
  } catch (error) {
    yield put(watchActions.details.failure(error));
  }
}