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Originally posted by jdt84_2:
The mouth covering isnt for lip reading, it is for background noise reduction.
And the pace of chips offense negates any sign stealing, if you waste time on the signs you will fail to get your call and defense on the same page.
Originally posted by AZ9er:
Oh this all makes sense.
But still does not necessarily explain Chip's crazy circus sideline signal calling
Originally posted by Overkill:"The sideline signals mean his quarterback, who will be Mark Sanchez this week against the Packers, doesn't have to relay the call to his teammates. Instead, they look to the signalers for everything they need to know: formation, play call and snap count."
LINK
I looked it up a few months back after watching an eagles game.