You must have closed it as soon as it stopped. As noted in the OP, "There are a series of stories in the link" and if you just leave it open, as it finishes one story it will continue to the next oldest one, eventually getting back to the initial story.

The details you asked about were, IIRC, in the next-most-recent story, or the second one that should have played.

Of course if you're on a smartphone or something then I don't know how the page would react, but that's what it does on a normal browser.