I searched when I saw the video was 7 minutes long and found more results about why Italians don't drink a cappuccino after lunch (or noon). The explanation is

I searched when I saw the video was 7 minutes long and found more results about why Italians don't drink a cappuccino after lunch (or noon). The explanation is they believe milk after meals impedes digestion. (I guess the video had a different but related explanation.)