This may mean departing from the basic line of travel and walking or driving to a delivery point and returning to the basic line of travel, or it may mean slowing down from normal driving speed, stopping to make a delivery to a curbside mail receptacle, and then resuming normal speed.
departing from the basic line of travel and walking or driving may be an implication of the conclusion referenced.
Departing from the basic line of travel and walking or driving may not be an implication of the conclusion referenced.