For Nebraska quarterback Heinrich Haarberg, the adoption of in-helmet earpieces to get play calls relayed from the sideline hasn’t really been a major difference. It has it’s perks, he said, but overall it’s not changing much of how he operates. Speaking after the Nebraska spring game, Haarberg explained that this is in part because he knows the system and hand signals so well already, in part because he was on the sideline delivering them last season. Given that he already speak the language of Nebraska’s offense, he’s not finding it being fed directly to his ears makes a world of difference….