I have learned things from people who would not have me as a student, and I have been claimed as a student by those whom I would never call "my teacher."
I have learned from people who will never know I exist, and I have learned from instructors who have taken special interest in me and I in them.
This "my" is a very strong word though. A lantern does not own the moth, a moth does not own the lantern, and neither owns the light between them; but, on the patio every night, there they all are, doing their thing quite naturally.
[My post to an AikiWeb thread earlier today.]