Da Er Ba's students, the Tibetan Clowns, were able to combine inner power to the point where 5 of them were almost able to stalemate a Great. Wouldn't Da Er Ba himself be able to execute that technique, since he was able to pass it onto his students? And if that were the case, why didn't he ever try and use it to support Golden Wheel Monk with additional inner power in some of his tougher fights?