Well the thing that I don't get is that Coach had the exact same producers & made by the exact same studio as these CBS sitcoms below. But this show had never aired on CBS, it aired on ABC.

Here is all of Barry Kemp's sitcoms that aired on CBS
Newhart
Fresno
Coming of Age
Princesses

Here is all of the Universal sitcoms that aired on CBS
Charles In Charge
Coming of Age
Major Dad
Princesses

So tell me, did it started out as a CBS product, and how did Coach became an ABC sitcom & not a CBS sitcom?