Dalton, who was making his second start in place of injured Dak Prescott, received a blow to the head from Bostic as he slid across the turf with 6:22 to play in the third quarter.
Dalton was alert and doing much better than he was when he left the field after the hit, according to a team spokesperson. He was in “good spirits” and will be flying home with the Cowboys.
Cowboys coach Mike McCarthy said he was unhappy with his teammates’ passive reaction to Bostic’s blow.
“We talk all the time about playing for each other, protecting each other,” McCarthy said. “It was definitely not the response you expect. ”
Washington coach Ron Rivera told ProFootballTalk.com he apologized to McCarthy for Bostic’s shot.
“I went over to him and apologized to him for that,” Rivera told the website. “I wanted him to know that we don’t play that way, and it’s a shame that happened. ”
ESPN’s Todd Archer contributed to this report.