This comes as Harry is understood to have spent just 45 minutes with his father at Clarence House before being spotted back at Heathrow Airport to return home to his wife Meghan Markle and their children, Prince Archie and Princess Lilibet.
During the Las Vegas event, the 39-year-old presented the Walter Payton Man of the Year award to Pittsburgh Steelers footballer Cameron Heyward.
Harry joked about the players “taking a breather every 15 seconds” and then said: “Instead of a 10-month season, let’s just make it 18 weeks. Genius.”
