​HOUSTON, TEXAS – SEPTEMBER 13: Head Coach Joe Brady of the Buffalo Bills arrives at the stadium prior to the game at NRG Stadium on September 13, 2026 in Houston, Texas. (Photo by Tim Warner/Getty Images) | Getty Images The Detroit Lions and Buffalo Bills will square off in a “Thursday Night Football” battle to kick off Week 2. The Bills went through a coaching change this offseason, and while an internal promotion of Joe Brady to head coach kept their offense intact, hiring Jim Leonhard as defensive coordinator has the Bills’ defense shifting from a 42 to a 34 front.Let’s take a closer look at the Bills’ coaching staff, the scheme they run, and some scouting notes from last week’s game along with some previously viewed games in 2025.Bills head coach: Joe BradyNFL coaching seasons: Entering ninth season in the NFLOffensive coordinator: Four; Bills 2024-25 and Panthers 2020-21Passing game coordinator: LSU 2019 (National Championship – QB Joe Burrow) Influences: Sean PaytonCoached under: Payton (Saints), McDermott (Bills), Matt Rhule (Panthers), Ed Orgeron (LSU)Playcaller: YesDan Campbell coached alongside Brady during the 2017-18 seasons in New Orleans, and has this to say about the start to Brady’s head coaching career:“I know Joe Brady very well. That’s a heck of a start there.”Offensive coordinator: Pete CarmichaelNFL coaching seasons: Entering 27th season in the NFLOffensive coordinator seasons: Entering 16th season Previous coaching positions: Senior offensive assistant, passing game coordinator, QB coach, WR coach, TE coachInfluences: Sean Payton (20 seasons), Marty Schottenheimer, Pete Carmichael Sr. (Father)Coached under: Payton (Saints, Broncos), Schottenheimer (Chargers, Washington), Chris Palmer (Browns)Detroit staff connection: John Fox, Senior Assistant (with Lions in 2023)Offensive schemePassing game: Pro-SpreadRunning scheme: Man, Inside-ZoneScouting notes:Efficient offense due to success in the run game and quick pass completionsSpread philosophies at their coreHeavy influences from Payton (Saints) and Bengals-style (how they use Joe Burrow)Week 1: 11 personnel 33% of snaps, 12 for 12%, 13 for 40%Note: Bills spent so much time in 13 in Week 1 because Texans stayed in nickel sets60/40 pass-run split in Week 1QB Josh Allen can throw to all levels of the fieldTested Texans deep in Week 1 more than he’s done in the pastUnder center 65% of the time in Week 1Play-action 41% of the time in Week 1Allen has 81 career rushing TDs (most among QBs in NFL history)North-South rushing attack runs right at the teeth of the defenseWeek 1 blocking percentages: Man roughly 40%, Inside-Zone 30%Dan Campbell on Bills’ offense:“Can’t say enough about this quarterback. He’s a catalyst for them. And it’s a good O-line. They’ve got weapons, and a good back.”“They have three tight ends. They have three real guys that have three different roles that they’re all three pretty good at. And (Jackson Hawes) 85 can block a