Which of the two YD stations did I hear today morning on IO-86?

Today morning, there was early activation of IO-86 (LAPAN-A2) on a low elevation pass in this region. Towards the end of the pass in my region I heard part of the callsign of a YD station and gave a call. Though I did not hear a reply, I was happy to note that YG4SLJ heard my call and posted on X. He mentioned that “There were YD6HGG and YD4FYI at AOS, then I heard you”