Prince Harry talks about how he used to speak with Prince Charles for “hours” as his father called him “darling boy” in an unearthed Radio4 clip from four years ago. The Duke of Sussex appeared to have a close and loving bond with the man he called his 'pa' when he interviewed Prince Charles during a stint as guest editor on Radio4’s Today show in 2017.The loving tone was easy to hear as the two spoke about climate change during the chat.