Jeff Halfey brings Green Bay Packers representation over to the Miami Dolphins. ESPN NFL insider Dan Graziano revealed who will join Hafley's first Miami staff on Thursday. “Sources say Nathaniel Hackett will join Jeff Hafley’s coaching staff in Miami as QBs coach,” Graziano posted on the social media website X, formerly known as Twitter. What Jeff Hafley's Dolphins staff looks like so farSix NFL teams hunted down Hafley for their openings before he settled on Miami. But the incoming QB coach and Hafley aren't alone on the past Packers' representation.