I found a TV listings rundown from a Raleigh News and Observer of a random Tuesday in January 1971 and it's....interesting.
According to the listings, WRDU (which at the time was carried on both channels 28 and 70) didn't even sign on until 10am, as WTVD carried both The Today Show at 7am followed by Captain Kangaroo at 9am (a time when most all kids would had been in school). WRDU at the time carried the NBC daytime lineup of game shows and soaps (that would change in later years as I mentioned above) while WTVD carried the CBS lineup of game shows and soaps.
However, WRDU aired a 5pm movie instead of any local news or NBC newscasts while WTVD carried their local news and the CBS Evening News With Walter Cronkite. At 7:30 when primetime programming began at the time, WTVD aired a one hour Don Knotts show from NBC, while WRDU aired F Troop (syndicated rerun) at 7:30, followed by Green Acres from CBS at 8pm. CBS's 7:30 show The Beverly Hillbillies aired on WTVD earlier in the day at 10:30am.
At 8:30, WTVD aired Hee Haw from CBS while WRDU aired Julia from NBC. At 9pm, WRDU carried the NBC Tuesday Night Movie while at 10pm, WTVD had Mannix from CBS.
And finally at 11pm, WRDU aired a late night movie while WTVD had their 11pm news followed by The Tonight Show Starring Johnny Carson from NBC at 11:30.
So as you can imagine, before the FCC intervened and forced the two stations to make a choice with only one network affiliation, trying to access CBS and NBC programming for Triangle residents back in the day was a mess and it also helps explain why WRAL TV 5 was the clear dominant #1 station in the market since they only had to worry about airing one network, even if said network was a distant third place nationally at the time.