"We did the opposite to what we have done all season and put the game to bed in the first half.
"David's goal took the wind out of their sails and it was all downhill from there."
Chiellini concluded by discussing his personal dual with Parma striker Bernardo Corradi.
"We are good friends," he insisted. "On the pitch we tussle and there are blows, but we hug at the end of the game."