I’m not sure if the data you’re referring to comes from a different study, but this one found that taking short 2-5 minute walking breaks from sitting every 20-30 minutes throughout the day improves metabolic biomarkers. Standing breaks didn’t have the same effect. The CNN article is trying to say that taking a short walk after a meal can improve blood sugar levels, which is even simpler.
So, I think to get the benefits that the study talks about, it’s probably safer to assume that you would only get benefits by walking 2-5 minutes more than 2-3 times a day, anyway. Wikipedia’s articles still indicate 30-60 minute of walking a day, 5 day a week.