Not always. If the first station didn't have radio-network ties that later stations had, it often lost the more desirable affiliations.Remember, after the "freeze" was lifted and many markets that had only one or two TV stations suddenly got at least three. The local station that was either NBC and ABC or CBS and ABC always gave up ABC to the newcomer.
Denver is an extreme case. It had no stations before the freeze ended. Then KFEL-TV got its CP on July 11, 1952. It managed to get on the air at low power a week later...and it would have been on two days earlier, except that the FCC staff couldn't believe someone could get a TV station on the air that fast and took some persuading that KFEL was for real. Having a mountain that overlooked the city helped, so did some preparation. KFEL first carried all networks. Then KBTV was next, and went with ABC. Bringing up the rear were KLZ-TV and KOA-TV, each owned by radio stations that had pre-existing relationships with CBS and NBC, respectively, peeling off those affiliations when they came on the air. KFEL-TV, on highly desirable channel 2, nonetheless ended up as an independent, which it still is as KWGN, not being affected by the September 1995 three-way swap of affiliations.

