Before the San Francisco 49ers played the Oakland Raiders, Jim Harbaugh jogged out of the tunnel for early warm-ups and made a beeline for Raiders owner Mark Davis.

The two clapped shoulders and had a brief kibitz as the cameras peered in.

"I told him, 'You stole our dysfunction!' " Davis told Tim Kawakami of their exchange. "'That's supposed to be our thing!'"

Harbaugh has been linked to the Raiders assuming he does not return in 2015 as head coach of the 49ers.