GREEN BAY, Wis. -- An 11-player Lambeau Leap? Go ahead. As long as the Green Bay Packers can still get the extra point or two-point conversion off before the play clock expires, it would be legal under the NFL’s relaxed celebration rules for this season.

The Lambeau Leap has long been grandfathered in as a legal celebration for a player who scores a touchdown but now that group displays are allowed, in theory the entire team could jump into the stands, referee Carl Cheffers confirmed during a rules seminar at Lambeau Field on Friday.

“In theory all 11 could go in [to the stands],” Cheffers said with an emphasis on the “in theory” part. “But they have 40 seconds to get the extra point off, so it’s probably going to preclude them from doing more than a couple.”

Cheffers explained how the play clock works after a touchdown.

“Once the calling official who is signaling touchdown drops his hands, the 40-second clock will start,” he said. “And if we get a confirmation on that touchdown prior to 20 seconds elapsing in that 40-second clock, then that 40-second clock is going to continue and the ball will be marked ready for play and we would expect them to get the kick off or the two-point conversion off within that 40 seconds.”

Cheffers, who was referee at the Super Bowl last season, and several members of his crew have been in Green Bay since Thursday and will officiate practices through Saturday’s Family Night at Lambeau Field. They showed players a league-produced video on rules changes and points of emphasis for the 2017 season. A portion of the video was dedicated to celebrations.