“We break the game down into around 250 clips,” Loran Vrielink — William Troost-Ekong’s personal video analyst — tells The Athletic. “He is on his MacBook in England, I’m on my MacBook in Holland. With FaceTime or Zoom, we go through the clips. I will say ‘Check out clip 19’, and I want to see his face to get his reaction. The verbal and nonverbal communication during the sessions are important to see if the player understands the concept and what he can improve.”
https://theathletic.com/2413301/2021/02/27/meet-the-analyst-helping-william-troost-ekong-improve-his-game-remotely-from-holland/
