UNC and Duke -- two relatively short trips -- are home in the same year, and away in the same year. So are BC and Miami -- two relatively long trips. Back before they moved Miami and Duke around, VT wouldn't have those two long trips to Miami and BC in the same season.

So, this year, VT hosts Miami and BC, and makes the two short trips, and next year, they'll host UNC and Duke, and make the two long trips.