Coming off their win over the Lions, the Saints flew to Lincoln Financial Field for a Week 2 duel with the Philadelphia Eagles. In the first quarter, New Orleans drew first blood as quarterback Drew Brees completed a 15-yard touchdown pass to wide receiver Marques Colston. The Eagles answered with quarterback Kevin Kolb (in his first start as the Eagles' quarterback) completing a 71-yard touchdown pass to wide receiver DeSean Jackson, yet the Saints replied with kicker John Carney making a 23-yard field goal. In the second quarter, Philadelphia tied the game as kicker David Akers got a 23-yard field goal. New Orleans answered with Brees completing a 25-yard touchdown pass to Colston. The Eagles closed out the half as Akers made a 32-yard field goal. In the third quarter, the Saints began to take command as Brees completed an 11-yard touchdown pass to fullback Heath Evans, along with running back Mike Bell getting a 7-yard touchdown run and Carney nailing a 25-yard field goal. The Eagles answered with Kolb completing a 3-yard touchdown pass to wide receiver Jason Avant. In the fourth quarter, New Orleans kept up its domination as running back Reggie Bush got a 19-yard touchdown. Philadelphia drove to the Saints' 5-yard line but could not score and the drive ended on downs; the Saints were then unable to move the ball, and rather than punting out of their own end zone, they opted to have Brees throw the ball out of the end zone for an intentional safety. After the ensuing free kick, the Eagles again drove deep into Saints territory, but again failed to score, as Kolb threw an interception which safety Darren Sharper returned 97 yards for a touchdown.
Question: How many more touchdowns were scored in the second half than the first?
Answer: 2