"I was thinking to run maybe 1:04:50, but I'm so happy," said the 2016 world half marathon championships gold medalist.
Then in the third set, Williams was rarely troubled by her rival en route to victory.
This was Van Aert's second stage win in the race, after the Jumbo all-rounder had also triumphed in stage five.
Though it was clear that Djokovic had not intended to hit the line judge, organizers nevertheless said the Serbian was disqualified in accordance with the rules.
World championship leader Lewis Hamilton could only finish seventh after serving a time penalty for coming into the pitlane when it was closed, dropping him to the back of the field.
Djokovic's unexpected exit ends both his 26-match winning streak this year and his attempt to win his 18th Grand Slam title, with the drama also sending Carreno Busta into the men's quarterfinals.
With this result, Dalian are sixth in Group A with nine points, while Henan with six points remained in last place.
Simiyu's first tenure courted controversy when the national team commonly known as 'Shujaa' refused to wear a kit emblazoned with their sponsors Brand Kenya in the Paris leg of the World Series in 2018.
Guangzhou R&F now sit sixth in the eight-team Dalian division with 10 points, four points ahead of Henan Jianye, the tailender on a six-match winless streak. Enditem
"BWF's highest priority remains the health and safety of all players and personnel participating in upcoming international tournaments," it said.
The re-appointment of Simiyu brought an end to speculation over who would take over the team that has struggled in the HSBC World Rugby Sevens Series since he left.