The KPL, the body mandated to manage the local premier league, had taken Football Kenya Federation (FKF) to the Sports Disputes Tribunal (SDT) seeking to overturn the decision to prematurely end the 2019/2020 top-flight season and declare Gor champions.
Maccabi now face Austrian champions Red Bull Salzburg over two legs, to be played on September 22 in Israel, and on September 30 in Austria.
In Group G's other match, Al-Ain FC and Al-Sadd SC shared the points in a thrilling 3-3 draw. Enditem
Clemens Wickler and Julius Thole from Germany are also the favorites for the EuroBeachVolley 2020 gold.
Duisburg tried to keep pace but the "BVB" continued their relentless march, as Giovanni Reyna's deflected free-kick left goalkeeper Leo Weinkauf helpless five minutes into the second half.
The next 20 minutes were dominated by Brest, but Maccabi's defense stopped all the visitors' attempts.
"We surprised Al-Taawoun with our physical presence which gave us the upper hand," said Resan.
"We had two big chances in the first half but Dortmund were more effective and clinical in front of the target today," Monchengladbach head coach Rose said.
The question of how to stop the 2013 and 2020 treble winning Bavarians remains unanswered. Most competitors expect the coach Hansi Flick's team to repeat.
"When the years are passing, you are trying to win as much as you can - and when you win, you want to win more. I think this club describes what I am as well; I want to achieve all of the goals, win as many trophies as possible," said the midfielder.
In the women's draw, former world no.1 Angelique Kerber, the 15th seed, lost 6-3, 6-1 to the Czech Republic's Katerina Siniakova, who now faces Daria Kasatkina of Russia.