Submit numerous concurrent fetch requests (exceeding the maximum supported by browsers)

Is it possible to send multiple fetch requests in parallel, exceeding the maximum browser's support for parallel requests? Will the browser automatically handle all the requests or should I reduce them into smaller batches and chain them together?

Promise.all([allpromisses])

Alternatively, is there another solution like this:

    function fetchAll(urls) {
        const requestPromises = urls.map(url => {
          return fetch(url).then(response => response.json());
        });
    
        requestPromises.reduce((chain, requestPromise) => {
          return chain.then(() => requestPromise)
            .then(data => data);
        }, Promise.resolve());
      }

or

getBunch([promises1]).then(getBunch([promises2]). ...

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