Maintain control of the ball and you can also ‘pass teams to death’ - keep them chasing until they tire and be ready to capitalise later on in games. This is the attacking element of possession. We’ve seen this quite a lot in recent years with Wenger keen for his teams to be ultra-fit so as to take advantage in the dying moments. Something that often gets overlooked in teams who aim to monopolise possession is the amount of running they do off-the-ball simply to find pockets of space to give their teammates more passing options and thus create a higher chance of
Walcott expanded lots of energy in our win and was a real outlet when we bombed forward. Our direct style seems to suit his play. Another thing I noticed in his game is that he is more confident in his 
