Actually, you're not far off. There are several videos with Nakamura playing blitz chess on youtube, and while he's apparently the best in the world at it, he plays like a twat, knocking over pieces and hitting the stopclock, making the other player fix the fallen pieces on their time. And also he's super fucking cocky about chess like that guy in that musical.
Except these two guys are international champions. They play a more sophisticated game of chess with one second per move than any of us could with one year per move. Working together.