It just pisses Vahanian off that Erheas is leading the army from the comfort of his city.
Vahanian in all likelihood will be ignoring all commands to stop dueling Goriad II.... Unless Rania specifically tells him he cannot duel, or a law is put in place
I thought of this quote today which I think is a compilation of other quotes and I intend to use it against Erheas..
"A man who will send others to die for a cause he will not fight for, can never be a true leader"