The slumping Dallas Cowboys have lost two consecutive games in blowout fashion. An offense that averaged 31.7 points in its previous six games, has just one touchdown in 23 drives over the past two games and that came on a short field after a turnover. The Cowboys have allowed 12 sacks in the past two games. The suspension of running back Ezekiel Elliott and the absence of Pro Bowl left tackle Tyron Smith were mitigating factors in the struggles, but futility was so great that tight end Jason Witten felt the need to address the offense this week. Quarterback Dak Prescott also spoke. But it was Witten who initiated the talks ahead of Thursday’s must-win match-up against the Los Angeles Chargers. The Cowboys (5-5) will get Smith get back on Thursday, but they can’t wait until Elliott returns Dec. 24 to get things turned around if they hope to remain in the playoff chase.