Teacher of my teacher

My regular piano teacher decided to move house, and suggested I go to her piano teacher who taught her when she was younger. I did so, for about a year or more at the time of the coincidence. Then one day in conversation she told me she went to a piano concerto of a talented young boy who is being taught by one of her old students. She showed me a picture of him and low and behold, he was my classmate. This happened in Hong Kong where there's nearly 8 million people, many of which teach piano, and many schools around the city. She did not teach music full time, does not work for any music schools, and she teaches young students at home. She very rarely speaks about her old students, so of course the only time she does is when I get this odd coincidence.
Total votes: 66
Date submitted:Wed, 18 Aug 2021 21:19:14 +0000Coincidence ID:11579