To answer on Chourios reaction to the play:
Chourio was credited with staying with the play to get the out. He said he wasn't sure what happened high above him.
"I thought I had a chance on that ball kind of the whole time off the bat," he said through the team interpreter. "Then the only thing I kind of realized, it changed direction a little bit, but I thought I had a beat on it for the majority of the time."
And the StatCast explanation that I found:
The ball left Ty France's bat at 105.3 mph, but with an incredibly steep 49-degree launch angle. In physics and baseball tracking, launch angle is everything.
A 49-degree angle means the ball was hit almost straight up—a massive "moonshot" pop-up.
According to actual historical Statcast data, balls hit at 105.3 mph with a 49-degree launch angle result in outs 99.5% of the time.
There has never been a home run with a launch angle above 46 degrees hit at American Family Field in the entire Statcast era.
The roof was closed, meaning there was no outfield breeze to carry a ball that was pushed so high into the air.
Actual trajectory modeling showed that France's hit would have only been a home run in exactly one MLB stadium: Daikin Park in Houston, purely because of its uniquely short 315-foot "Crawford Boxes" in left field.
If a ball is genuinely projected to travel 410 feet (deep into the stands), the outfielder will immediately turn around and sprint back to the wall.
On this play, Brewers left fielder Chourio barely moved. He tracked the ball off the bat, drifted slightly, and camped out on the warning track.
Chourio noted after the game that he felt he "had a chance on that ball the whole time" and only noticed a slight change in direction when it ticked the cable.
The ball didn't drop out of the sky because it was robbed of 410 feet of distance; it dropped because it was a towering pop-up that was already destined to land right in the left fielder's glove.