DENVER — Trevor Siemian found plenty of milestones Sunday afternoon.

As the Broncos added to their tally en route to defeating the Cowboys 42-17, the game notes just kept coming.

He became the first Broncos quarterback to throw for three touchdowns in the first half since Brock Osweiler on Dec. 20, 2015.

With his second touchdown pass, he nabbed the longest streak with multiple touchdown passes by a Bronco since Peyton Manning had a 15-game stretch from 2013-14. His three-game run with multiple touchdown passes is also tied for the longest active streak in the NFL.

Siemian's four touchdown passes were the most by a Broncos player at home since Manning threw four on Nov. 23, 2014, against Miami.

But Siemian never came close to biting on a question that asked whether his performance could lead to increased national attention.

"It's still so early," Siemian said. "We're only two games into the season. I've seen how quickly things can change in this league. We're very, very happy obviously to start the way we have, but we're going to go into Buffalo, and Buffalo doesn't care if we won two games or we're 0-2. It's going to be a great challenge for us. We're just taking it week by week."

There was plenty reason Sunday, though, to appreciate what Siemian had accomplished.

His 231 yards, four touchdowns, 68.8 percent completion percentage and 116 quarterback rating led the Broncos to 35 offensive points — the team's most since the 2014 season.

Outside of a single interception attributed to miscommunication and a strip sack early in the second quarter, Head Coach Vance Joseph thought his quarterback was near perfect.

"I thought Trevor played excellent, once again," Joseph said. "Very, very, very efficient with the football. He put us in good plays all night. Again, outside of the one interception, which was more of a unit issue than a Trevor issue, he played well. If he plays that solid for us, we'll be hard to beat down the stretch."

In a game that was billed as a matchup between the Cowboys' offense and the Broncos' defense, it was Siemian and Co. that performed in a manner that rivaled the league's best offenses.

Yet while the flashy throws to C.J. Anderson, Emmanuel Sanders (twice) and Virgil Green will dominate the highlight packages from Sunday night's game, there were more important plays in the Broncos' winning effort. On third down, the Broncos were able to stay on the field time and time again. Their 9-of-15 performance on third down led to nearly 34 minutes of possession for the Broncos and kept Dak Prescott and Ezekiel Elliott off the field.

Those timely third-down throws or runs aren't nearly as flashy, but they were the lifeblood of the Broncos' dominant showing.

"Especially Dak and those guys on the other side, we knew it was going to be a physical game, and for us to be successful, we had to kind of control the ball and match their physicality," Siemian said. "That's kudos to the offensive line. Those guys did a heck of a job and allowed to kind of get in that flow and sustain some of those long drives."

But as Joseph preached in the locker room after the game, success is not final. As the Broncos head to Buffalo in Week 3, they must continue to run the ball well, convert timely third downs and make plays in the red zone.

And as they do, Siemian will look for a number of players to contribute. That means more than just Anderson, Sanders and Demaryius Thomas. Four other players also made receptions Sunday night, which Siemian said is a product of Offensive Coordinator Mike McCoy's scheme.

That combination — the players, the scheme, the attitude — that's what led to the Broncos' success. Even on a night when so many numbers reflected positively on Siemian, he refused to call it his statement game.

"I think we played well," Siemian said. "The Denver Broncos played well. That's one of the things [when] we came in — we wanted to play complementary football. To beat the good teams in this league, you've got to play well together, everybody across the board: offense, defense, special teams.

"It's Week 2, but we're excited about where we're at and hopefully we can continue to grow."