Throw in a defense that held the Detroit Lions without a touchdown and two outstanding special-teams plays, and the team with the AFC’s best record rolled over the team with the NFL’s stingiest defense, 34-9 on Sunday, the Pats’ seventh straight win. Everyone is linked together,” quarterback Tom Brady said, “so we all feed off each other: offense, defense, special teams. In that Thanksgiving meeting, the rookie was a late-game replacement for Drew Bledsoe in Detroit’s win. On Sunday, LeGarrette Blount rushed for 78 yards and two short scores and the Patriots improved to 44-3 in their past 47 regular-season home games. The Patriots (9-2) have such depth that Jonas Gray didn’t even play one week after rushing 37 times for 201 yards and four touchdowns in a 42-20 win over the Indianapolis Colts. Blount was cut by Pittsburgh on Tuesday, the day after he walked to the locker room as the Steelers were lining up for the last play.