Définition et Signification de "man to man"

What is the origin of the idiom "man to man" and when to use it?

The idiom "man to man" originated from the concept of direct communication and interaction between two individuals, particularly men. It is used to signify a conversation or exchange that occurs openly, honestly, and without any intermediaries. The phrase emphasizes the notion of equal footing, where both parties engage in a sincere and genuine dialogue, often to address a sensitive or important matter.