Pretty incredible stat. I've watched a solid amount of KC games the last several years, as I'm sure most of us have, and have always felt officials let their line get away with A LOT.
It was almost unbelievable last year that the Eagles set the all-time team sack record (passing the previous record by over 15), yet didn't have a single sack in the Super Bowl while KC didn't have a single play where they held!?!?
It's definitely unbelievable that they've been called for zero holds in those 3 games.
Edit: Not sure this video is actually holding, but the point still stands.