When Harris accepted a role on the Chicago Bears’ staff in January of this year, the Cowboys lost more than a coach. They lost a system architect for their secondary, and the gap has shown in how Dallas defends the pass at all levels. Scheme-feel and communicationCoaching a secondary in the NFL is as much about building a shared language as it is about calling coverages. Man coverage - why the Cowboys’ once-elite press looks sloppyMan coverage success isn’t an abstract stat; it’s execution of cadence discipline, physical press technique, and a correct read-reaction sequence. In the NFL, where momentum and field-position swings matter, that psychological shift is a strategic resource that the Cowboys have missed.