In a shameless act of self-promotion, I was recently interviewed by RSF forum member Ryan Patrick St George for his Talking Fists podcast:
https://www.buzzsprout.com/501379/9816954-talking-fists-episode-13-jon-nicklin-song-style-xingyiquan-yang-taiji-dai-xinyi-xinyiliuhequan
We covered not just my Song style xyq training but the relationship between Xinyi Liuhe, Dai style and xingyi, also the Lei Lei and Xu Xiaodong debacle and what happened to Yang style taiji - hopefully should be of interest to forum members here!