That would go until Midnight.
Back in the delayed Friday double header days, 9 had a massive post 10:30pm drop off. People would essentially only watch the first half. Part of that was the ad structure. Part of it was the timeslot.
All games regardless of the day need to end at the very latest by 10:30-10:45pm by the latest otherwise people will not invest in watching the second game if they regularly nod off during it.
9 will never show a game on FTA earlier than 7pm that clashes with the news. Even then they don't really want to dislodge A Current Affair unless you can make the NRL outrate it overall .
If I was 9/Stan and I had full rights I'd do the following:
5:15 Stan: NRLW game
6:55 Channel 9 News/Stan - end the Friday news broadcast with a 5 minute preview of the Friday double headers - no need to do it in the actual broadcast - PROMOTE YOUR CONTENT, NOT YOUR RIVALS!!!
7:00 9/Stan: NRL Coverage start
7:01 9/Stan: NRL Game 1 (family game) kicks off
7:45 Game 1 approximate half time starts
7:55 Game 1 approximate second half starts
8:40-ish Approximate end of game 1 (except for golden point scenario) -- then about 20 seconds after the first game ends, at the second ground all the players are already on the field and the signal is sent to the other ref--
8:40-ish 9/Stan: NRL Game 2 (later game) kicks off -- (prior to this at the ground there was a 7pm NRLW game)
9:25 Game 2 approximate half time starts - Game 2 has an extended half time to make up for reduced ad space in game 1
9:40 Game 2 approximate second half starts
10:25-ish Game 2 ends
10:30-11:00 Post game coverage of both games
Every week: Out of the 4 teams, at least 1 Queensland team, 1 Sydney team, 1 Melbourne/Perth (Perth in later games only) team & 1 other team (NZ teams only in early game as away teams so it's a 9pm NZ kickoff).
Covering 3-4 metros/regions every Friday.
4 hours of FTA coverage - on par with fumbleball - BUT - 200-220 minutes is actual game time, to their 165 minutes.
Ratings dominance every single round.