Not sure why you're downvoted for this comment - for those who don't understand it, it is referencing the explicit responsibility about getting the information to the person whose domain it is vs. doing more and making sure that it is resolved properly. The manager does strictly what is the person's responsibility, the leader makes sure that the person under him/her gets a satisfactory resolution - the leader does this because it affects individual & team morale and sets the example that that is what is expected (to a positive end). The leader also employs his/her abilities endowed upon the position to make sure it isn't forgotten, which builds trust, transparency, and fosters an open culture - the one who is purely focused on just managing actively works against all of these points by not exerting leadership.