By Chiara Fiorillo Prince Harry and Meghan Markle have reunited following the Duke of Sussex’s short visit to the UK as they travelled to Nigeria together on a 72-hour whistle-stop tour. The Duchess of Sussex did not join her husband as he attended a service to mark the 10th anniversary of the Invictus Games at St Paul’s Cathedral in London but met him at Heathrow Airport where she landed from Los Angeles on Thursday. The Sussexes then boarded the British Airways overnight flight to Abuja, the capital of Nigeria. The flight was delayed as the scheduled pilot was sick and a replacement had to b…