Re: talent/skill;
Talent is innate, skill is learned.
Nobody makes it to the NBA without skill.
I'd say Rob's strength is his talent/feel for the ball, unless he actively has practiced falling out of bounds whilst saving a ball, looking around and tipping it to the right person.
That's the kinda situations where talent/instinct takes over, and he's ridiculously good at that.
Same with his timing for blocks, though that's something he's honed by playing a lot, no doubt. (so adding skill to talent)