Prince Williamisn’t commenting onPrince Harry’s memoir,Spare.

The Prince of Wales, 40, appeared to ignore the question from a reporter while leaving theOpen Door Charityin Birkenhead on Thursday.

Though the Prince and Princess of Wales appeared to be in clear earshot, they didn’t react to the query as they walked out.

The couple’s visit to Open Door, a vibrant organization that helps support young adults, was the second of two stops on Thursday, their first day of official events in the new year.Prince Williamand Princess Kate began the day atRoyal Liverpool University Hospital, where they officially opened the new medical hub and thanked staff for their work.

Prince William (L); Prince Harry.Daniel Leavl-Olivas-Pool Getty Images; Chris Jackson/Getty Images

Prince William, Duke of Cambridge and Prince Harry

In a similar instance, while walking into the facility, William and Kate didn’t answer reporters' shouted questions about their reaction toPrince Harry’s memoir — though it was hard to tell if they could hear over the blustering wind.

Prince Williamand Princess Kate made the engagements two days after the global release ofPrince Harry’s unprecedented memoir,Spare. In it, Harry reflects in-depth on his royal upbringing, military service, relationships with family members and mourning his mother,Princess Diana.

The Duke of Sussex, 38, coversthis week’s issue of PEOPLE, where he spoke about writing the memoir as part of his “mental health journey.”

Jenna Jones

Prince Harry cover rollout

For more fromPEOPLE’s exclusive interview with Harry, check out this week’s issue, on newsstands Friday

“I don’t want to tell anyone what to think of it and that includes my family,” Harry tells PEOPLE. “This book and its truths are in many ways a continuation of my own mental health journey. It’s a raw account of my life — the good, the bad and everything in between.”

“My hope has been to turn my pain into purpose, so if sharing my experience makes a positive difference in someone’s life, well, I can’t think of anything more rewarding than that!” he added.

source: people.com