I wouldn't put it beyond Yang Guo, if he turned his mind to it. Early on, he tried to force all the different martial arts he had learned into a single combined art, and fire deviated a number of times due to their incompatibility. From this, he learned the lesson Feng Qingyang taught Linghu Chong about DG9J, that using whatever was best without thought of staying within a school was as good as creating a new skill. And later, he managed to go beyond this lesson, and actually succeed in integrating the ideas from these incompatible arts into a single combined art.
I'm wondering how the qi training methods of DGQB as practiced by YG would have translated into the execution of Ancient Tomb arts.