What's your question? If you want to know what shows occupied
that timeslot I can give you these, from 1960 up to Sullivan's
cancellation in 1971:
The Tab Hunter Show (1960-61)
Car 54, Where Are You? (1961-63, except for the summer of
1962 when Sir Francis Drake aired at that time)
Grindl (Imogene Coca as a sort of poor man's Hazel, 1963-64)
The Bill Dana Show (1964-January 1965)
Branded (January 1965-September 1966)
Hey, Landlord! (1966-summer 1967)
Let's Make A Deal (summer 1967, beat both Sullivan and "The FBI,"
but Monty Hall and Stefan Hatos were unable to persuade NBC to
revive the primetime show, so they took "Deal" to ABC, which did
have room for a primetime version)
The Mothers-In-Law (1967-69)
The Bill Cosby Show (where he played coach Chet Kincaid, 1969-
summer 1971)
Even after Sullivan's show was gone NBC still had to face "The FBI"
on ABC. In the summer of '71, Red Skelton aired on Sundays at 8:30,
and in the 1971-72 season it was "The Jimmy Stewart Show," a sitcom
where he played a college professor. NBC didn't hit paydirt in that timeslot
until the fall of '72, with the "NBC Sunday Mystery Movie" (basic elements:
Columbo, McCloud, McMillan and Wife, plus a fourth show like Hec Ramsey).