Cady - I have two video links attached to this post that I looked up only to get a representative sample of the outer forms of the arts you study. The first is Sam Chin demonstrating I Liq Chuan
and the second is Seigo Okamoto demonstrating Daito Ryu Aikijujutsu
It's pretty evident from the clips that the outer forms of both arts are decidedly different in appearance. Since both arts stress the generation of internal power, I'm wondering if they share common internal power training methods or are the training methods unique to the respective art?
You've gotten to the nub of it ron. A lot of the internal power authorities posting on forums like this are conflating arts that they have little to no knowledge of with their own systems and ideas. If people really want to get to grips with an art like daito ryu, they need to find an instructor within that lineage and train under them for a suitable period of time. It's not as sexy as attending seminars with internal power and chinese martial art teachers and then debating on the web, but there you go. Anyway, back to the usual conversation!