That's fine flyboy, an exchange in mil parlance means a 2-3 year tour of duty flying in another countries air force in a flying unit with a reciprocal arrangement for the other countries pilot. We do not have exchanges with India.
You refer to visits, which are quite different. The headline in RAAF news of "cultural exchange" was an editors misnomer - it was really a visit.
I do apologize for using the wrong word. Thank you, I never knew that, guess I learnt something new today
. Anyway, back to the topic.