Chappell, in a column for Sydney Morning Herald, recalled the underarm bowling incident from 40 years ago to drive home his point.
Steve Smith getting bowled by Jasprit Bumrah down the leg-side with his leg-stump exposed on the third day of the second Test.
Chappell invoked Mahatma Gandhi before crediting Kohli's intensity for bringing about a paradigm shift in Indian cricket.
Dhoni is most inspirational captain in 50 years of global cricket, says Australia great Greg Chappell
Chappell also disclosed that he would throw many challenges at Dhoni and the Indian would love to live up to those.
Chappell, who served as India head coach between 2005 to 2007, further said that the saliva ban will have a minimal effect on Australia's fast bowlers.
Harbhajan also criticised Greg Chappell for dividing the team and added that to date, no one knows what was the real motive of Chappell in trying to do the things he did.
Greg Chappell spoilt his name, could've been a good batting coach: Ex-Indian cricketer Mohammad Kaif
Chappell was coach of the Indian team for two controversy-riddled years between 2005 and 2007 in which he clashed with several senior members of the team.
Harbhajan had earlier referred to Chappell's time with Team India as 'worst days of Indian cricket' following the latter's remark on former captain Mahendra Singh Dhoni.
Greg Chappell's stint as the head coach of India was a turbulent one, ending after India's unceremonious first round exit in the 2007 World Cup.
Former India coach Greg Chappell described MS Dhoni as the “best finisher” in the game, and revealed the advice he gave to him when he saw him batting.