Stephen Colbert, who is set to host his final episode of 'The Late Show' on May 21, recently shared a light-hearted message he sent to Byron Allen after CBS announced that Allen's 'Comics Unleashed' would take over the 11:35 PM ET slot. Colbert, 61, expressed his congratulations to Allen and jokingly suggested he drop a note to Johnny Carson, referencing Allen's history as the youngest comic to perform on 'The Tonight Show Starring Johnny Carson' at just 18 years old. CBS's decision to replace Colbert's show comes amid financial pressures affecting the late-night television landscape, prompting a shift towards lower-cost programming. Colbert remarked, “It's none of my business” regarding the network's choice. As he wraps up his tenure, Colbert has welcomed notable guests like former President Barack Obama and Oprah Winfrey. Additionally, he is collaborating with his son and screenwriter Philippa Boyens on a new 'The Lord of the Rings' film, emphasizing the joy of the creative process. Colbert also revealed his aspiration to have Pope Leo XIV as a guest on his show, humorously referring to the invitation as his 'white whale.'