Previously unbeaten San Francisco’s loss to Jacksonville on Sunday included a heated exchange after the game between 49ers defensive coordinator Robert Saleh and Jaguars head coach Liam Coen, who had to be separated. “Not a big deal,” Coen, a first-year head coach whose team is 3-1, told reporters after the game. That’s it.”Saleh, a former New York Jets head coach and longtime NFL assistant, was not available to media after the game. “I’m not too worried about it.”Shanahan said his organization doesn’t care if Saleh’s comments upset the Jaguars’ coaching staff. “I think Saleh was paying them a big compliment in what they’re good at doing.