Conductors' careers are made for the most part with 'Romantic' music. 'Classic' music eliminates the conductor we do not remember him in it.
On the other hand when I give it closer thought I realize I'm not enough of a dictator to conduct an orchestra because it requires a pretty awful person. When you read these biographies of famous conductors they are all awful people who fail in their private relationships.
Technique is communication: the two words are synonymous in conductors.
The very first time I was on a car in Atlanta I saw the conductor - all conductors are white - ask a Negro woman to get up and take a seat farther back in order to make a place for a white man. I have also seen white men requested to leave the Negro section of the car.
The great leaders are like the best conductors - they reach beyond the notes to reach the magic in the players.