The Bengals entered their week eleven matchup with the Kansas City Chiefs sporting a 4-5 record coming off an upset victory over reigning the Super Bowl champions, the New York Giants. The Chiefs began the scoring in the game, completing an eight play, fifty-nine yard drive with a thirty-four yard Ryan Succop field goal following three-and-outs by both teams one their respective first possessions of the football game. From there however, the momentum swung heavily in the favour of the Bengals, who would reel off the next twenty-one consecutive points. The Bengals began their run by completing an eleven play, seventy-eight yard drive with a four-yard touchdown pass from sophomore quarterback Andy Dalton, to fellow sophomore receiver AJ Green. The drive, highlighted by two different successful fourth down conversions by the Bengals offensive unit, was seen as a catalyst for the momentum swing that took place by Cincinnati running back BenJarvus Green-Ellis. The touchdown marked the ninth straight game with a receiving score for the second year receiver out of the University of Georgia. The streak, the current longest in the National Football League, also broke the Cincinnati Bengals single-season franchise record for consecutive games with a receiving touchdown.After the teams traded two possessions each that resulted in points for neither team, Cincinnati manifested a five play, fifty-seven yard drive. The drive appeared to culminate on a ten-yard throw from Andy Dalton to third-year tight end Jermaine Gresham, out of the University of Oklahoma. However, upon booth review, Gresham was deemed to have been tackled just within the 1-yard line. Dalton would run the ball in one play later, on a bootleg run to make the score 14-3 in favour of Cincinnati. Following another Kansas City punt, the Bengals continued their onslaught, as their offense engineered an eleven play, seventy-nine yard drive highlighted by runs of twenty-one and seventeen yards respectively by running backs BenJarvus Green-Ellis and Cedric Peerman. The drive was capped off by a one-yard touchdown scamper by Green-Ellis, putting the Bengals ahead by a commanding 21-3 score. Just before the half time break, Kansas City showed signs of life, completing several medium-range passes during a quick seven play, sixty-five yard drive. Place kicker Ryan Succop would be successful on his second attempt of the afternoon, nailing the thirty-three yard field goal, bringing the Chiefs to within a score of 21-6 at half time. After each team was unsuccessful on their respective two possessions in the third quarter of play, Cincinnati would score the final points of the football game on the opening possession of the fourth quarter. Andy Dalton finished off the Bengals twelve play, seventy-two yard drive by hitting rookie receiver Mohamed Sanu, out of Rutgers. The touchdown gave the Bengals a 28-6 advantage which would end up being the final score on the day.With the victory, the Bengals evened their record at 5-5 on the season, pulling to within one game of both the Indianapolis Colts and the division rival Pittsburgh Steelers in the AFC Wildcard playoff race.
Question: How many points did the Chiefs lead by at halftime?
Answer: 15