Pete Carroll and Geno Smith appear to mesh their personalities well because the quarterback was clearly happy to be playing under the head coach. So much so that after Carroll was fired by Seattle and then hired by the Las Vegas Raiders, Smith was excited to join him there.
The difference was that Carroll didn't necessarily want to leave his job with the Seahawks, and Smith requested to leave. One might assume that both harbor some ill will against the Seattle organization, but Carroll would have more of a right to his anger.
But this is Pete Carroll we are talking about.