In a defensive battle, neither team managed to score in the 1st quarter. In the second quarter, the only scores were a 44-yard field goal by Nick Folk for Dallas and a 24-yard field by Jeff Reed for Pittsburgh. The teams went into halftime tied at 3. In the 3rd, Tony Romo found Terrell Owens for a 12-yard touchdown pass that broke the tie. Then, a 33-yard field goal by Nick Folk sent the Cowboys into the 4th quarter with a 13-3 lead. Midway through the 4th, Jeff Reed connected on a 41-yard field goal to cut the Cowboys' lead to 13-6. Then, Ben Roethlisberger and Tight End Heath Miller hooked up for a 6-yard Steelers touchdown that tied the game at 13. On the ensuing Dallas possession, Tony Romo was intercepted by Deshea Townsend who returned it 25 yards for a touchdown, and Pittsburgh led 20-13. After the kickoff, the Cowboys failed to convert on a 4th-and-10 and the Steelers got the ball back. They were then able to run the clock out and seal the victory. With the Cowboys falling to 8-5, the New York Giants clinched the NFC East (despite losing to the Eagles).

Answer this question based on the article: How many points were scored by halftime?
6