Giorgio Chiellini breaks into laughter. He is reminded of the time his former Juventus team-mate and current Chelsea forward Alvaro Morata compared training against him as akin to going 'into a cage with a hungry gorilla and trying to take his food.'
Many strikers will share that view. Chiellini may now be 34 but he is part of a Juventus defence that has conceded only one goal in 15 games since November 20.
That period takes in over 22 hours of play and includes matches against Barcelona, Inter Milan, Roma and Napoli. Harry Kane appears to shatter a different record every week but breaking through the Juventus backline may be his most significant test yet when the Champions League resumes next week.