According to the Pokebattler raid guide for Aggron, it was mentioned that Aggron cannot be duoed due to its high defense; an average 2-man team would need approximately 221 seconds to take down an Aggron, which is more than the 180 seconds allotted for an Aggron raid. Pokebattler gave it a less than 1% chance that an Aggron duo raid would be possible.
However, earlier today two brave Mystic trainers managed to beat the simulator and duoed an Aggron with 2 seconds remaining. They managed to beat the simulator by 43 seconds; an astonishing accomplishment.
The two trainers agreed to send their successful attempt to Pokebattler, and the video above analyzes how they were able to defeat the simulator by such a wide margin.
Do any trainers in Winnipeg want to challenge their record? The world is your oyster, and if you have your 6 maxxed out Machamps, give it a try!