So it'd be more like..

Kage: You seem trustworthy. Here, become a Jounin.
Former Chuunin: Thanks, wow, that was a surprise.
Kage: Now, lead your squad into the mouth of that Tailed Beast and hit it until it stops spewing death at us.
Former Chuunin: ... My promotion has everything to do with the fact that a bunch of Jounin just died trying to do that, doesn't it?