Here are some Xiao Fanche clips to compare.
Here is one of the versions (of three) that my Teacher Shi Zhengzhong learned from a man who studied with Zhao Zhuxi BEFORE he taught in Vietnam.
CCK Taichi mantis xiao Fan che
That odd jumping chop in the 2nd rd is what you are calling one elbow sheilds half the body?
Wang Chieh Laoshi: Xiao Fan Che Quan, Babu Tang Lang
Wang Jie, student of Wei Xiaotang does the same form, though this video is very unclear, you can see that around :38 they jump and chop. Just like in the Taiji Mantis version from Zhao Zhuxi. Think about the degrees of seperation between those two lineages of Mantis, this is the ONLY form they have in common (you can check me on that fact) and yet, I know for a fact that they both do this form in a very similar fashion. Mostly some stylistic differences, but the moves are, under that style, mostly the same.
In other words, NO One Elbow Shields half the Body.