Brad Biggs: Matt Eberflus’ defense was the NFL’s toughest on 3rd down last year, one scout says. What will that mean for the Chicago Bears this season?

In a casual conversation with a scout a few weeks back, he said the most difficult defense to prepare for last season was the Vic Fangio-led Denver Broncos — no surprise considering the complexities the former Chicago Bears defensive coordinator is known for.

In the next breath, the scout said the defense that was most problematic on third down was the Indianapolis Colts under Matt Eberflus.

The Colts?

Eberflus had some fine players to work with, including tackle DeForest Buckner, linebacker Shaquille Leonard and nickel cornerback