Terrell Owens’ frustration with the Dallas Cowboys offense carried over from the field to the locker room Sunday.

Owens, despite having 18 passes thrown his way in the loss to Washington, had what was deemed a serious conversation about the offense with quarterback Tony Romo after the game, according to multiple sources.

The types of routes and throws are what concerns Owens, the sources said. The receiver, who the sources said was venting to Romo about his frustrations, has not liked how some of the throws were coming from the quarterback as far back as the season opener.

But Owens said Sunday he is still confident in Romo.

In the loss to the Redskins, Owens finished with seven catches for 71 yards and one touchdown.