CHAPEL HILL, N.C. — Miami edge rusher Marquise Lightfoot was trying to explain why his defense struggled to get off the field Saturday in a painfully close 38-35 win over North Carolina, summing up the biggest missteps as failures of communication — particularly in a back end that has been thinned by injuries.
That, Lightfoot said, is what Miami needs to work on “preparing for the next one — for … I don’t know who we have.”…