That's not correct. The Colts went three-and-out twice just in the first quarter. They also went 1-and-out in the first quarter. They had four more possessions when they gained only one first down, plus three possessions when they gained just two first downs. On those 10 possessions, they totaled 177 yards and three points -- even though they started FIVE of those possessions inside Chicago's territory.
The Colts averaged 9.75 offensive possessions per game this season. They had a whopping 14 possessions against Chicago, mostly because the Bears' offense was incredibly inept (their average possession lasted only 1 minute, 40 seconds -- a full minute less than the NFL average). The Colts' offense also started with incredible field position almost all game. Given the Colts starting field position on 14 possessions, an average NFL offense against an average NFL defense would have scored 28.5 offensive points. The Colts scored only 22, which means the Bears' defense actually performed better than the Colts' offense when it came to scoring/stopping scoring.