The article stated "He flew the drone [a DJI Mini 3 Pro] about 1.5 miles before losing sight of it."
That statement implies he could see it when the drone was less than 1.5 mile away. Personally, I find it hard to believe he could see it at...
It will live display on the RC2, you just won't get a "clean out". That means instead of just getting the picture from the drone, you'll also see all of the telemetry. So it's fine for some stuff, but if you're broadcasting, it won't work.