Kate Middleton, Prince William Tour Boston After Appearing In Harry And Meghan's Doc Trailer

Prince William and Kate Middleton were business as usual amid the noise over the first-look trailer for Prince Harry and Meghan Markle's upcoming Netflix docuseries.

The Prince and Princess of Wales continued their tour of Boston, Massachusetts, Thursday, the same day the first trailer for "Harry & Meghan," which featured a photo of Prince William and Middleton, was unveiled.

Prince William and Princess Kate visited Roca, a non-profit organization that helps at-risk youth, where they were warmly welcomed by a throng of fans. They also visited the Greentown Labs in nearby Somerville to learn about climate innovations, Entertainment Tonight reported.

The Duke and Duchess of Cornwall met a young boy dressed as a royal guard from head to toe during their stop at Greentown Labs. The boy shook hands with Prince William and gave Middleton a bouquet of roses.

The royal couple also went on an outing to Boston Harbor and heard about Boston's waterfront at Piers Park from representatives of key environmental organizations such as Boston Harbor Now, Stone Living Lab, the Trustees of Reservations and The Harborkeepers, People reported.

Prince William and Middleton's three-day visit to the U.S. — their first since spending time in New York City in 2014 — will culminate with Friday evening's Earthshot Prize awards ceremony.

During the ceremony, five winners from the pool of finalists will be announced and will each be awarded $1 million in grants to scale and accelerate their project's goals.

The timing of the release of the first trailer for Prince Harry and Markle's docuseries raised eyebrows among royal commentators and fans as it came a day before the Earthshot Prize event.

Daily Mail Diary editor Richard Eden accused Prince Harry and Markle of attempting to steal the limelight from Prince William and Middleton, calling the California-based couple "bitter."

ITV News royal editor Chris Ship also tweeted: "With Harry's brother and sister-in-law in the USA today and tomorrow ... and Prince William's @EarthshotPrize in Boston on Friday night, some might reasonably ask: 'couldn't they have waited a couple of days?'"

The inclusion of a royal family photo, in which Middleton seemingly gives the camera a stern look, in the docuseries trailer also led to accusations from GB News host Patrick Christys that it made the Princess of Wales look "evil."

"Did anyone else notice the snide dig at William and Kate?" Christys said on GB News after watching the trailer.

"'Evil Kate! Evil Kate! [But] Meghan stood proud anyway,'" he said, mockingly. "It does make Kate look evil, doesn't it?"

While no official date has been announced by the streaming platform, Prince Harry and Markle's docuseries "Harry & Meghan" is expected to start streaming on Netflix on Dec. 8.