BRISTOL, ENGLAND - MAY 30: Head coach of Australia, Justin Langer talks to Former player Ricky Ponting during the Australia Nets Session at Bristol County Ground on May 30, 2019 in Bristol, England. (Photo by Luke Walker/Getty Images)

Former Australia Cricket coach Justin Langer hasn't held back in a tell-all interview on his departure from the top position.

Langer left in February after turning down a six-month contract extension, with Andrew McDonald taking over following weeks of speculation surrounding the ex-Australian opener.

Langer was quick to single out Test Skipper Pat Cummins, the then ODI Skipper Aaron Finch and the Cricket Australia Board for his exit, highlighting their "coward" behaviour.

Speaking with Code Sports, Langer said the "brutal" feedback he got from Cummins and Finch had well and truly begun even before murmurings for his move.

"I spoke to Pat Cummins. He said to me about five times, 'this might be brutally honest'," Langer revealed.

"I said, 'Pat, there is nothing brutal about your feedback. What is brutal is I'm hearing it behind my back through the media or through sources. No one's telling me. Tell me'.

"Everyone was being nice to my face but I was reading about this stuff, and half of it ... I could not believe that is what was making the papers.

"A lot of journalists use the word 'source'. I would say, change that word to 'coward'. A coward says, not a source. Because what do you mean 'a source says'? They've either got an axe to grind with someone and they won't come and say it to your face, or they're just leaking stuff for their own agenda."

In terms of his relationship with Cricket Australia, Langer wished he had more efficient communication lines with the board.

"The hardest thing for me of all it was: I got the feedback (and) I did something about it. We won the T20 World Cup, we won the Ashes. We were No.1 in the world. I've never enjoyed coaching more and I've still got sacked. That's the hardest thing," Langer said.

"Because you can't give someone feedback, do something about it, and then that to happen.

"But I talked to the Cricket Australia board three times in four years. That's craziness. And that's the only thing I'd do differently. Because when you know people haven't got your back, there is no lonelier place in the world. When you do know people have got your back, there's no more powerful place in the world. And that's what I would have done differently."

Having taken over from Darren Lehmann in May 2018, Langer coached Australia to a 55.5% win record under his tutelage, second amongst all Australian coaches to John Buchanan.

Langer's achievements as coach include retaining the Ashes in 2019 on English soil for the first time in 18 years and guiding Australia to its maiden T20 World Cup title last November.