Actually, Anthony Seibold physically last coached the Broncos in Round 13 of the 2020 NRL Series (65% of the season for 3 Wins & 10 Losses) and Peter Gentle physically coached them from Round 14 up to and including the final round, Round 20 (the remaining 35% of the season) and he didn't win a game in those final 7 games.
When Seibold last coached the team, they were in 15th spot, and they remained there until Round 18. The following week (Round 19) they lost again, and the then last placed Bulldogs beat the Rabbits which then put the Broncos into last place, and the eventual winner of the wooden spoon at the conclusion of the final round the following week.
Seibold officially stepped down on the 26th of August 2020, after he had spent the previous two weeks in home isolation after having to step out of the Project Apollo bubble for a serious family matter.
During those two weeks away, he reflected on his role at the Broncos and the impact it was having on his life away from rugby league.
Broncos CEO Paul White said at the time: “For the remainder of the season, Peter Gentle will continue to coach the team, as he has done for the past fortnight."
Oh yeah, I forgot to add that Seibold was not sacked, he quit.
Anthony Seibold has chosen to step down from the Broncos Coaching role, effective immediately.
www.broncos.com.au