- Now I am in A country (Iran).
- My ticket was issued and the boarding pass will be issued through B passport.
- C country Does Not need a visa with B passport
I do not want immigration to stamp my B passport, but I must prove who I am and it means I must show my A passport (they see both the boarding pass and passport).
The question: Is it possible to show B passport to prove matching the passport and boarding pass, but they stamp my A passport to exit?
In return (entering A country I won't have a problem because will not be any boarding pass to show immigration.