Giants quarterbacks coach Brian Callahan said Jaxson Dart’s timing, which connects to his eyes and footwork, is an emphasis to improve the second-year QB’s performance in the pocket. “It’s a first-year player coming into the second year, so [we’re looking to improve] everything from knowing the new system and tying the footwork in and eyes and feet,” Callahan said Wednesday after the team’s final minicamp practice. “It’s really ground zero for us because everything’s new.