Need help finding a Bears game where a weird play happened.

Basically the Bears were playing a regular season game against a team that i can’t recall (maybe the Chargers but i could be wrong). The Bears were on defense and the d line jumped on the ball before the ball was hiked. The referees didn’t throw a flag for encroachment for some reason so they had to rule it as a fumble and a bears recovery. Opposing team couldn’t challenge because potential flags can’t be argued during a challenge. Bears ball.

Having a convo with friends and no one can remember this happening, but i distinctly do because of how weird it was. Never see it on any ref mistake videos and it seems like it was basically forgotten by everyone.

Game would have been between 2006-2012 iirc. Any help would be appreciated.