Luis Enrique's team left it late and flabbergasted the hosts when Moreno flicked on a cross before Gaya poked home with a turn shot from very close range in the closing seconds of injury-time.
The teams are due to meet at Estadio Azteca in Mexico City on September 30, however health concerns and possible quarantine measures have cast doubt over the fixture.
"I was a little bit in shock," Carreno Busta said. "The rules are the rules. The referee and the supervisor did the right thing, but it's not easy to do it."
Simeone will (and does) argue he doesn't have the resources that are available to Real Madrid and Barcelona, but while that may be true, he has more cash to splash than anyone else in Spain and with players such as Koke, Thomas Partey Vitolo, Angel Correa, Diego Costa, Alvaro Morata and Joao Felix, he certainly does have players to entertain.
Barca is not willing to give up on Messi, especially not for free.
Marcelo remains in support as left-back, presuming that Madrid decide to cash in on Sergio Reguilon, while Alvaro Odriozola's return from loan should offer support to Carvajal.
After the game, Beijing sits the second in Suzhou division, with Shanghai SIPG dominating the bellwether position. Wuhan ranks third, trailing Beijing by two points.
Having finished just 17 hundredths of a second short at last month's opening Diamond League meeting in Monaco, Kipyegon seemed on track to achieve her ambition with 200 meters remaining, but faltered slightly over the final few meters to cross the line in 2:29.92.
The four-day competition, including dressage, jumping, endurance race, speed race and others, attracted more than 300 professional riders from across China.
Djokovic's exit means there will be a first-time Grand Slam champion in the men's draw, with Zverev among the contenders at Flushing Meadows.
Necaxa's night went from bad to worse when midfielder Claudio Baeza was sent off after being shown a second yellow card for a bad challenge on Pedro Aquino with 13 minutes remaining.