Sky Shadow clearly values Feng Yi more, even more than his contemporary, Mu Tou.
As for the relationship between the two, they actually have little to no contact. Even within the Federal Army, they barely interact, each busy with their own duties.
After all, they belong to different factions, are led by different leaders, and their team branches are intricately complex, resembling the phrase "wells do not interfere with rivers".
Take Feng Yi for example; he himself forms an independent faction, being a front-line combat leader not bound by anyone, not swayed by trends, nor following anyone's pace or engaging in deceitful flattery. As a national hero, his support comes from himself, his autocratic authority, the Blazing Legion and the people, and numerous distinguished honors branded with his name.