https://www.today.com/popculture/news/ted-danson-kelsey-grammer-feud-cheers-rcna176937

Ted Danson reminisced on working with Kelsey Grammer on "Cheers" and apologized (https://www.google.com/search?q=Ted+Danson+apologizes+to+Kelsey+Grammer&oq=Ted+Danson+apologizes+to+Kelsey+Grammer&gs_lcrp=EgZjaHJvbWUyBggAEEUYOTIGCAEQRRg90gELODgyOTE3ajBqMTWoAgCwAgA&sourceid=chrome&ie=UTF-8) for an argument they had when they worked together.