According to Osho, Krishna and Arjuna are not bound by a formal guru–disciple hierarchy; they are two intimate friends in dialogue. Yet, in essence, Krishna functions as guru and Arjuna as an unconscious disciple—his questioning shows it. Because the bond is friendship, Krishna persuades rather than commands, laying out every path so Arjuna freely chooses the one truly suited to him.
They talk like close friends, not boss and student, but Arjuna is still learning from Krishna without realizing it.