Warning! Spoilers ahead for the Frasier season 2 premiere.The events of the Frasier revival season 2 premiere confirm why Frasier Crane was different in Cheers. Kelsey Grammer’s therapist-turned-Harvard educator is officially back in the Paramount+ revival to continue his final act in Boston. The first 10 episodes of Frasier were focused on getting the character re-acquainted with his old stomping ground, although he oddly didn’t visit his usual drinking hole. Despite this, Frasier’s history with Cheers remains a big part of his overall arc, especially since it paved the way for the birth of Freddy. Eventually, the new show will have to acknowledge it.

https://screenrant.com/frasier-season-2-kelsey-grammer-different-seattle-boston-cheers-confirm/