So much for the two-quarterback system in San Francisco.

Rookie quarterback Trey Lance got zero snaps on Sunday against the Eagles, despite the team’s plan to use both Lance and Jimmy Garoppolo — presumably until Lance shows that he’s ready to take over.

Coach Kyle Shanahan, who has a well-earned reputation for being meticulous and strategic, continues to create the impression that he’s guided by impulse when it comes to using Lance. After Sunday’s win, Shanahan explained that he never got the right impulse to put Lance on the field.