An in-depth look at the countless different variables that are factored into the NFL’s creation of its 256-game regular-season schedule.

The NFL schedule is out, and it contained more than a few wrinkles worth noting.

We took a deeper dive at some of the oddities and key games. Here’s what grabbed our attention.

Attention Ravens: You sure?

The Ravens wanted to buck the NFL tradition of getting a bye after an overseas trip. Done. Positive: The Ravens will not have to spend their bye early in the season (coaches and players don’t like that). They will indeed play the week after facing the Jaguars at Wembley Stadium on Sept. 24. Negative: They come home to host the rival Steelers the following week. That’s a tough assignment after the London trip.

Sunday night game, Week 1: A re-run

OK, we’re a bit sick of Giants at Cowboys in this spot. But we learn to live with the league’s lack of imagination. So that with in mind, we look for the storyline: Besides this being the third year in a row that the Giants open at Dallas, it is a team Dak Prescott has yet to beat. Dallas was 13-3 last season, 0-2 against the Giants.

The Browns: We get no respect

Look at the Cleveland schedule. All 1 p.m. ET kickoffs (except the game in London), which means no national television audience. Not even a Thursday night game. And get this: the game in London is being shown on NFL Network, so it’s a stretch to call that a “national TV” game.

Prime-time in L.A.: Not yet

No prime time games home games for Chargers in their itty-bitty stadium in Carson and same for the Rams, who are still sharing the Coliseum with USC. On the other hand, the Rams and Chargers do have games on the same day three times. Good luck with that traffic.

Patriots high and getting higher: (By that, we mean the altitude)

The Patriots come off their bye to play at Denver in Week 10, then play the Raiders at Mexico City – which has an altitude even higher than Denver’s — in Week 11. Expect they’ll spend the week working in some high-altitude location. By the way, Denver altitude: 5,280 feet; Mexico City altitude: 7,382 feet.

(Non-NFL flashback: Bob Beamon’s soaring, then-world-record long jump at Mexico City Olympics in 1968. His mark of 29 feet, 2 ¼ inches is still the Olympic record, and stood as the world record until Mike Powell leaped 29 feet, 4 ¼ inches in 1981.)

Don’t tweet this: First game on Amazon set

The first Thursday night game Amazon will stream will be the Bears at Packers in Week 4. Last season, Twitter did the streaming.

Falcons’ new stadium: An…