What I have researched technique wise over the years, I do know that their are alot of techs. that can be the same but I have seen in the chuan fa system (forms and techs.): southern chinese boxing (hokkien), Tjimande,Tjikalong Tjingkrik, kwitang,Poekoelan,( hsing yi ??) and others.
Lets bat this around and see what we come up with. Sifu Dan