Bennett, who did not practice Thursday, is expected to be re-evaluated next week and could return for the Bears' road game against the Arizona Cardinals.
Bennett was inactive for the Bears' game Sunday in Minnesota after he suffered a concussion in the first half of the team's overtime loss to the Seattle Seahawks on Dec. 2. The precise moment Bennett sustained his concussion is unknown, but he absorbed at least two shots to the head before he left the game.
Injuries have limited Bennett to just 23 receptions for 250 yards and one touchdown this season, but the veteran is still one of the club's most reliable targets in the passing game. Bennett has 14 catches for 163 yards in six regular-season games versus the Green Bay Packers, but made three receptions for 45 yards and one touchdown in the NFC Championship Game two years ago.
Cornerback Tim Jennings (shoulder) and linebacker Brian Urlacher (hamstring) also missed practice, but Urlacher's absence doesn't come as a surprise because he's expected to miss the remainder of the regular season. Backup running back Michael Bush (ribs) sat out Thursday's session along with rookie defensive end Shea McClellin (knee) and defensive tackle Henry Melton, who was excused from the workout for personal reasons, according to coach Lovie Smith.
"We have a lot of other players, about five or six that were injured today, that were able to do a small amount," Smith said.
That group of limited participants included linebacker Lance Briggs (knee/hip), quarterback Jay Cutler (neck/knee), tight end Kellen Davis (knee), linebacker Geno Hayes (knee), offensive tackle Jonathan Scott (shoulder) and defensive tackle Matt Toeaina (knee).
The Packers held out receiver Jordy Nelson (hamstring) on Thursday along with running back James Starks (knee) and defensive end C.J. Wilson (knee). Receiver Donald Driver (thumb) participated in a limited capacity, as did linebackers Terrell Manning (shoulder) and Clay Matthews (hamstring), offensive lineman T.J. Lang (ankle), safety Jerron McMillian (back) and defensive end Mike Neal (shoulder).