The chuck roast seems to be a hard cutter of the meat but if you are using a high-quality smoker it will provide you with a delicious taste of the roast. The smoking process of the roast needs to be low and slow as it allows the roast to become chewy and servable along with a juicy taste.
Furthermore, due to the low and slow cooking procedure, your roast communicates with the connective tissues in a great way that results in softening the whole roast.