Prince William & Kate Middleton Wear Matching Outfits While Honoring Healthcare Workers

The Prince and Princess of Wales appear unbothered by Prince Harry's memoir.

Prince William and Kate Middleton seem to continue living by the "never complain, never explain" mantra following Prince Harry's bombshells in Spare.

On Thursday, Jan. 12, the Cambridges made their first public appearance since the Duke of Sussex's book release, visiting Liverpool, England, and surrounding neighborhoods.

Related: The Biggest Bombshells From Prince Harry's Memoir Spare

William and Kate's engagements were to honor those working in healthcare and mental health fields, as well as to promote awareness of mental health initiatives. The pair visited the new Royal Liverpool University Hospital, as well as the Open Door Charity's Bloom Building, which promotes youth mental health programs.

On their way into the hospital, one onlooker asked William and Kate about Harry's comments in and about Spare, but the pair didn't respond.

Related: Prince Harry Says Prince William and Kate Middleton Told Him to Wear Nazi Costume

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It's unclear, however, if they even heard the question being asked because it was reportedly (and visibly, per the video) quite windy at the time.

Related: King Charles Gives Princess Kate Middleton a New Royal Title

Healthcare workers at the hospital lavished praise about the couple's warmth and consideration. One well-wisher noted that William and Kate sported matching outfits of navy blue and deep green. You can watch William's response below:

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"They were so welcoming. They were so warm and friendly," ophthalmic imaging technician Amber Otto told PEOPLE. "Even when they were being rushed out, they made sure they made time for everybody ... The Princess asked me what I did. They were talking to as many people as possible."

Related: Meghan Markle Says First Meeting With Kate Middleton Was 'Jarring'

Prince William and Kate Middleton, Princess of Wales listen to Lee Pennington, founder and charity director during a visit to the Open Door Charity, a cause focused on supporting young adults in Birkenhead, England.<p><a href="https://www.gettyimages.com/detail/1246180679" rel="nofollow noopener" target="_blank" data-ylk="slk:Jon Super-WPA Pool/Getty Images" class="link ">Jon Super-WPA Pool/Getty Images</a></p>
Prince William and Kate Middleton, Princess of Wales listen to Lee Pennington, founder and charity director during a visit to the Open Door Charity, a cause focused on supporting young adults in Birkenhead, England.

Jon Super-WPA Pool/Getty Images

Open Door founder Lee Pennington told PEOPLE that it was "surreal but beautiful" to host the future King and Queen, explaining, "It was a bit nervy at first but then after a bit it was chilled and interesting and great."

Related: How the Palace Honored Kate Middleton's First Birthday as Princess of Wales

"It was beautiful to speak candidly with people in the world that they inhabit. And what came across loud and clear is that they care about, and value, the same things in the world that the people involved in this organization do," Pennington said. "They care deeply about 'how can we make this happen, work better and make sure we are building the best to support people in what is the biggest health needs of our time—the mental health needs of young people. But boil it down, and they care about the same things that we do."

Next, Prince William's Net Worth Is So Much Higher Now That He's One Step Closer to the Throne