However, Harper's advice at the Kensington Oval prompted West Indies coach John Dyson to speak to match referee Alan Hurst during the final session of the day.
Aboriginal Affairs Minister John Duncan said there had been a "good, frank dialogue" and that Mr Harper had agreed to a future "high-level" meeting with Assembly of First Nations Chief Shawn Atleo.
Among the sightings: National anthem singer Martina McBride, TV personality Star Jones, basketball greats Julius "Dr. J" Erving and Scottie Pippen, Speaker of the House John Boehner, New England Patriots lineman Vince Wilfork, actor Anthony Anderson and actress Valerie Harper, who was recently diagnosed with terminal brain cancer.