I honestly think not forcing a swap at the start was the biggest. It slowed Sainz up who was on the soft tyres so he couldn’t utilise them properly, just to keep Leclerc ahead, but then his pits top was slow so it was for nothing anyway!
It was a good teaching moment. I got to explain to my wife why swapping drivers is a good idea at times, why Ferrari wasn’t going to do it, and why this means Ferrari is incapable of real success as a team.