Coming off their home win over the Titans, the Broncos flew to Soldier Field for a Week 12 interconference duel with the Chicago Bears.  In the first quarter, Denver trailed early as Bears kicker Robbie Gould managed to get a 24-yard field goal.  The Broncos would reply with kicker Jason Elam getting a 23-yard field goal.  In the second quarter, Denver took the lead with rookie RB Andre Hall getting a 16-yard TD run, while Chicago replied with Gould kicking a 44-yard field goal.  The Broncos would end the half with Elam kicking a 22-yard field goal. In the third quarter, Denver lost its lead as WR/KR/PR Devin Hester returned a punt 75 yards for a touchdown.  The Broncos would answer with FB Cecil Sapp getting a 5-yard TD run, but the Bears immediately struck back as Hester returned a kickoff 88 yards for a touchdown.  Denver would regain the lead as Cutler completed a 68-yard TD pass to WR Brandon Marshall.  In the fourth quarter, the Broncos increased their lead with Cutler completing a 14-yard TD pass to TE Tony Scheffler.  However, Chicago tied the game with RB Adrian Peterson getting a 4-yard TD run, while QB Rex Grossman completed a 3-yard TD pass to WR Bernard Berrian.  In overtime, the Bears sealed Denver's fate as Gould nailed the game-winning 39-yard field goal.
Question: How many yards was the longest touchdown catch?
Answer: 68