The Brumbies are the only team to have won every Super AU game after they were too strong for the Western Force.
The Brumbies made it two wins from two in Super Rugby AU as a late try from Issak Fines saw them beat the Waratahs.
The Rebels came up short with a second-half fightback as the Brumbies ran in five tries in a 31-21 Super Rugby AU victory.
After a three-month suspension due to coronavirus, Super Rugby will return in Australia from July 3, albeit in a revamped format.
SANZAAR chief executive Andy Marinos has described reports over potential alternatives to Super Rugby as "merely speculative."
After weeks of talks, professional players in Australia have agreed a deal over an average 60 per cent pay cut.
While there is still no agreement, talks over restructured salaries for players made "good progress" on Sunday, says Rugby Australia.
A new domestic competition will not take place until May at the earliest, with a huge section of the Rugby Australia workforce stood down.
Rugby Australia has invited Western Force to join the Rebels, Waratahs, Reds and Brumbies in a new competition.
Tom Wright and Solomone Kata scored two tries apiece to lead the Brumbies to their fourth consecutive victory over the Waratahs.