If NBC Had Never Fired, And Had Retained David Letterman For The Later-Night Talk Show Following “The Tonight Show” With Johnny Carson, And Later Jay Leno; And If Ray Romano Had Appeared On David Letterman’s NBC Show, Leading To Television Sitcom Offers For Ray Romano; Then The Television Sitcom “Everybody Loves Raymond” Would Likely Be Networked On NBC Television, And Not CBS Television; Assuming CBS Was Still Owned By The Paley Family, Or Taken Over By Ted Turner; And Was Managed The Same Way It Always Had Been From It’s Founding In 1927; Up Until The Mid-1990’s.

https://www.biography.com/celebrities/a69510473/ray-romano-david-letterman-friendship

https://www.vanityfair.com/hollywood/2017/08/ray-romano-interview-get-shorty-big-sick-dramatic