The Denver Broncos offense was rolling in the first half of their must-win season finale against the Chiefs.Bo Nix completed each of his first 18 passes in the first half, and made a little history in the process.His third touchdown pass of the afternoon was thrice deflected in the back of the endzone before landing in the hands of Devaughn Vele for what goes down in the books as a 3-yard score.It was Nixs 18th passing touchdown at home, which is the most by a rookie in NFL history, according to The Denver Posts Troy Renck.Nix was electric in the first half, racking up 215 yards passing and another 47 rushing despite a 29-yard scramble being called back for holding in the final minute of the half. Denver led 24-0 at the break.The Broncos need a win or tie to clinch the AFC's No. 7 seed in the playoffs.