You know mathematically he can pass couple of times to Bonucci or Barzagli and he'd have 100% pass accuracy and more than Pirlo or Vidal.
okay, let's dig deeply
average pass length:
Serie A - 36m long balls, 20m backwards, 20m forwards
CL - 36m long balls, 19m backwards, 21m forwards
EU - 40m long balls, 21m backwards, 20m forwards
passing accuracy:
Serie A - successful passes 91% - general 1489 passes, headed 91, long balls 142; Unsuccessful Passes 9% - general 91, headed 36, long balls 49
CL - successful passes 86% - general 203 passes, headed 17, long balls 27; Unsuccessful Passes 14% - general 22, headed 8, long balls 8
EU - successful passes 87% - general 210 passes, headed 13, long ball 20; Unsuccessful Passes 13% - general 15, headed 12, long balls 9
Enough? Chiellini is a good passer