The private coaches of India's ODI skipper Mahendra Singh Dhoni and Test captain Virat Kohli have spoken to TV channels, indicating  that all is not well in the dressing room.

"The dressing room atmosphere is worrying him (Dhoni) , he is not able to concentrate on the game," Dhoni's coach Chanchal Bhattacharjee said.

Within hours of Bhattacharjee's comments, Kohli's coach Raj Kumar Sharma was seen on another channel describing the ODI series loss to Bangladesh as "the most humiliating thing for Indian cricket".

"It was the Black Sunday of Indian cricket," Sharma said.

Sharma did not blame Dhoni's captaincy for the defeat, but some in India see the 'war of coaches' as a bigger problem - that Dhoni and Kohli are not pulling on well.