I'm sure there is also a lot of nuance involved, but then again most of the people involved are professionals, it's up to the higherups to communicate their preferences and it's up to the scouts to understand subtleties of the(ir) game. I doubt there is a special bond betweens scouts and coaches, do you read a lot about mass layoffs of scouts or who scouting departments switching clubs with a coach?
And I would expect every eventual signing to be thoroughly scouted by the final decision maker, if not live then via videos.