The duo, both 26, impressed for the Blues as they secured Premier League glory and reached the FA Cup final last season.
And as well as appearing together on the pitch they're locker-mates at the club's Cobham training ground.
Alonso has now opened up to Chelsea's official website about what it's like being in close quarters with Kante and team-mate Cesar Azpilicueta on a daily basis.
And the Real Madrid academy graduate's revealed he's helping Kante brush up on his Spanish.
Asked what they talk about, Alonso said: "Between them they speak about FIFA because they like to play it a lot, but not me so with Azpi I speak about Spanish teams and football mostly, and he also asks me about my girlfriend because I have a new girlfriend and he is curious.
"And with N’Golo, he is trying to speak Spanish and I am trying to speak French so we are both teachers of each other."
Alonso says Kante got a headstart on learning Spanish during his school days in France.
He added: "I was very impressed when I heard N’Golo speaking Spanish, he used to learn it at school and he can speak it."
Kante was linked with a potential switch to Real earlier this year.
Whether the La Liga giants will come calling for him in future remains to be seen.
Kante was injured during the international break and could miss Chelsea's trip to Crystal Palace next week.
