One other possibility might be that NBC delays cutting back Prime time until after the 2024 Summer Olympics or the fall of 2024.
Traditionally, Olympic prime time coverage (even for Olympics held in places where no live prime time coverage in the United States is possible, as will be the case with Paris in 2024) runs from 7, 7:30, or 8 P.M. EDT until 11:30 P.M. or 12 Midnight EDT (depending on a number of factors, including day of the week and events scheduled for broadcast).
If NBC holds off giving back the 10-11 P.M. ET/PT hour to local stations until after the 2024 Summer Olympics, then late local news will be delayed by only 30 to 60 minutes (depending on when prime time coverage ends).
But if NBC stations program late evening news at 10 P.M. starting in September, 2023, then late evening local news could end up being broadcast 90 minutes or even two hours later than usual during the Olympic fortnight.