What next? Steelers' defense struggling with consistency

Detroit Lions running back D'Andre Swift, top, gets past Pittsburgh Steelers outside linebacker Alex Highsmith (56) during the second half of an NFL football game in Pittsburgh, Sunday, Nov. 14, 2021. (AP Photo/Don Wright)

Pittsburgh Steelers outside linebacker T.J. Watt (90) is helped off the field after being injured during the second half of an NFL football game against the Detroit Lions, Sunday, Nov. 14, 2021, in Pittsburgh. (AP Photo/Keith Srakocic)

Pittsburgh Steelers outside linebacker T.J. Watt (90) is helped up after being hurt on a play during the second half of an NFL football game against the Detroit Lions in Pittsburgh, Sunday, Nov. 14, 2021. (AP Photo/Don Wright)

Pittsburgh Steelers running back Najee Harris (22) slips a tackle attempted by Detroit Lions cornerback Jerry Jacobs (39) during the second half of an NFL football game in Pittsburgh, Sunday, Nov. 14, 2021. (AP Photo/Don Wright)

Pittsburgh Steelers running back Najee Harris (22) slips a tackle attempted by Detroit Lions inside linebacker Jalen Reeves-Maybin (44) during the second half of an NFL football game in Pittsburgh, Sunday, Nov. 14, 2021. (AP Photo/Don Wright)

Pittsburgh Steelers head coach Mike Tomlin, center, stands on the sideline during the second half of an NFL football game against the Detroit Lions, Sunday, Nov. 14, 2021, in Pittsburgh. (AP Photo/Keith Srakocic)

Pittsburgh Steelers quarterback Mason Rudolph (2) throws a pass during the first half of an NFL football game against the Detroit Lions in Pittsburgh, Sunday, Nov. 14, 2021. (AP Photo/Don Wright)

Pittsburgh Steelers quarterback Mason Rudolph (2) throws a pass during the first half of an NFL football game against the Detroit Lions in Pittsburgh, Sunday, Nov. 14, 2021. (AP Photo/Don Wright)