https://screenrant.com/frasier-kelsey-grammer-cheers-crossover-reunion-response/

Kelsey Grammer offers a blunt response when asked why Cheers doesn’t factor into the new Frasier, detailing his feelings on the subject.

Frasier Reboot’s Refusal To Return To Cheers Hurts Its Most Important Story (Will Season 2 Fix It?) (https://screenrant.com/frasier-reboot-cheers-bar-not-return-story-problem/)

The Frasier reboot refuses to revisit Cheers despite being set in Boston, effectively disregarding an important piece of the character's history.

Frasier Reboot: Kelsey Grammer Gives Contradicting Response About Cheers Bar Fate (https://screenrant.com/frasier-show-cheers-bar-fate-kelsey-grammer-response/)

Kelsey Grammer contradicts an original Cheers writer with his own take on what really happened to Sam's Boston bar in the Frasier reboot.