After spending some time learning more about promises and looking at the requests being sent and received by the browser (when talking with the server), I decided to remove as many of the waitFor(xx) where xx was a unit of time and instead wait for a specific selector to appear on the page or to use the ability of Promise.race to either wait until all the XHR requests have been responded to or 1 second has elapsed - as follows:

    await Promise.race([
	pendingXHR.waitForAllXhrFinished(),
	new Promise(resolve => {
	    setTimeout(resolve, 1000);
	}),
    ]);

The result is that it takes about 1/2 the time to fill out the form.

A new video is also available that shows the script running and also shows the messages from the program as it operates. A final clip within this video shows the interaction with the presentation data and time field at 1/2 real-time. In this it is possible to see that the program has entered the time "4:31" and this data has been sent to the server via AJAX and the response has updated the field to show "04:31".

The code is available at https://github.com/gqmaguirejr/diva-puppeteer