While Meghan Markle and Prince William don't seem to have a lot in common - they are both fans of an unexpected sport. It initially seemed that the Duchess of Sussex would have a close relationship with her brother-in-law during the early days of 'the Fab Four', but communications broke down, tensions emerged and Prince Harry stopped being a work royal.
However, the Sussexes put their differences with the Prince and Princess of Wales aside after the death of Queen Elizabeth II when they greeted people who had gathered to pay their respecsts outside of Windsor Castle. It remains to be seen whether the two couples will start to forge a closer relationship in the future, but they could find common ground with a shared hobby.