[chris25260880]

Actually there was the trio KING AM-FM-TV owned by the Bullitt sisters. Since the early 50's there was always a KING-FM.(classical)
Though the stations now have different owners there is still a KING-FM and a KING-TV channel 5. The FCC allows the use of call letters under different owners if there is an agreement. The group that bought 1090 in the spinoff likely did not want to spend the money
to work this out....big mistake, with the decline of AM they were really the ones who needed to keep the identity. Viewers watch NBC on channel 5 or channel 5 News, TV call letters are of little importance.
Another example of this sad phenomenon WJAR 920 once top tier
Providence station with an NBC affiliation and WJAR-TV NBC 10.
920 is now WHJJ almost non existent because it got lost in the shuffle after losing it identity. There are at least 100 more examples of this.