If you haven’t already found the answer- That is hunyuan taiji. Chen shi xin yi hunyuan taijiquan
Created by Feng Zhiqiang (Bruce’s famous friend who Bruce has said taught Bruce the Chen style material he knows), hunyuan is a branch of the chen style. Feng was a master of both chen style taiji and xinyi quan (Chen fa ke taiji and Hu Yaozhen xn yi ). These were both super famous masters of their respected arts and both encouraged his study with the other. Feng later combined their methods into his own method of Chen style.
That is enough information to get you started using a google search. His system emphasizes qigong and meditation along with partner training, along with the solo forms. Martial arts are there as in Chen, but health has first emphasis. It’s good stuff. I practice the 24 form of this system.