The Kansas City Chiefs fell to the Philadelphia Eagles, 20-17, on Sunday in what marked another tough loss.

Here are some quick notes from the game.

1. The Chiefs' defense played well enough to win on Sunday.

A week after the Chiefs' defense struggled to slow down the Chargers in Brazil, Kansas City was stout on Sunday against Philadelphia's star-studded offense.

The Chiefs held Philadelphia to a 5-for-14 mark on third down and just 216 total yards of offense, marking the Eagles' lowest offensive output since Week 6 of the 2021 season. Philadelphia punted on half of its offensive drives (5 of 10) while averaging only 3.7 yards-per-play. Specifically, tailback Saquon Barkley was held under 100 rushing yards and the Eagles' passing game was held to just 94 net yards.

Sunday's loss was a tough one, but in terms of the season-long outlook, the Chiefs' defensive performance was extremely encouraging, and something the team can hopefully build on moving forward.

2. Rookie defensive tackle Omarr Norman-Lott recorded his first sack as a pro.

Norman-Lott, who made his NFL debut on Sunday, tallied perhaps the defensive play of the day when he sacked Eagles' quarterback Jalen Hurts midway through the third quarter.

The sack, which was also a testament to the Chiefs' coverage on the backend, demonstrated Norman-Lott's persistence as he continued to collapse the pocket before breaking free from his block and sacking Hurts. Norman-Lott also deserves credit on the play for ensuring that he didn't land on Hurts, which could have drawn a penalty.

It was an awesome play all around that personified the energy and attitude with which the defense seemed to play on Sunday.

3. In a game that was incredibly evenly-matched, a few mistakes hurt the Chiefs.

The box score tells a story of two teams that played just about as evenly as could be on Sunday:

Total Plays: Kansas City: 57, Philadelphia: 58

Total First Downs: Kansas City: 17, Philadelphia: 16

Total Yards: Kansas City: 294, Philadelphia: 216

Rushing Yards: Kansas City: 121, Philadelphia: 122

Third Down: Kansas City: 4-of-12 (33%), Philadelphia: 5-of-14 (36%)

Penalties: Kansas City: 6, Philadelphia: 6

Touchdowns: Kansas City: 2, Philadelphia: 2

So, in a game like that, the margin for error is razor thin. The team with the fewest mistakes will come out on top, and unfortunately for Kansas City, the Chiefs made a few more miscues than Philadelphia did on Sunday.

Notably, the Chiefs missed a field goal (albeit a 58-yarder), they provided the Eagles with a short field (that led to three points) with a failed fourth down attempt deep in their own territory, and Kansas City missed a scoring opportunity with an interception off a deflection in the red zone.

Those mistakes proved to be costly in the end as the Chiefs lost a game they otherwise may have won.

4. The offense connected on an explosive play for the second-straight week.

In terms of things the offense can build on in the weeks to come, the Chiefs connected on another explosive play during Sunday's game when quarterback Patrick Mahomes found wide receiver Tyquan Thornton for a 49-yard touchdown late in the fourth quarter.

It marked the second-straight week that Kansas City completed a pass of exactly 49 yards, and now through two games, the Chiefs have recorded four passing plays of at least 30 yards. That total is tied for the second-most of any team in the NFL.

It hasn't led to a victory yet, but the Chiefs' ability to stretch the field will continue to be important as the season goes on, especially when wide receivers Xavier Worthy and Rashee Rice return to action.

5. An 0-2 start isn't ideal, but the Chiefs have fought back from a similar circumstance in recent memory.

This may be the first time the Chiefs have started 0-2 under Patrick Mahomes, but it's not so different from Kansas City's tough start to the 2021 season. The Chiefs began 1-2 that year and didn't climb above the .500 mark until Week 9, notably going 3-4 through the first seven weeks of the season.

Despite that slow start, however, the Chiefs went on to compile a 12-4 record and host the AFC Championship Game.

There's also plenty of historical precedent for teams fighting back from 0-2 starts to later make noise in the postseason. The best examples are the 2001 New England Patriots and 2007 New York Giants, who each went on to win the Super Bowl following 0-2 starts, but even last season, the Baltimore Ravens and Denver Broncos each began the year 0-2 before making the playoffs.

It's certainly not ideal, but the old trope of it being a long season rings true. Things haven't gone the way Kansas City planned so far, but there's still plenty of time to get back on track.

"I think we're coming together as a team, man. I mean, when you deal with adversity, it's about how you deal with it," Mahomes said. "Obviously, this isn't how we wanted to start, but how are we going to respond? So, I'm excited for the next few weeks to see who wants to be challenged, and how we can get back and really get after it."

The Chiefs will aim to do just that with a prime-time clash against the New York Giants up next.