By VAHE GREGORIAN The Kansas City Star (TNS)
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KANSAS CITY, Mo. — Midway through the fourth quarter on Thursday night, the Chiefs’ defense had so thoroughly harassed and stifled Denver that it was time to look it up: The last time they’d shut out an opponent in a regular-season game was 2011, and the last and only time they’d shut out the Broncos was in 1970.