We do know that any other OC won't have any latitude that is for sure. It is just a guy feeling I have about Brian getting more leeway. Here is why:
-Kirk knows that this would be Brian trying to make his "bones" and a #72 ranked offense won't impress anyone on a resume
-Family members generally have more leeway than outsides, as the dad will trust the son more than non family
-Brian doesn't strike me as a "yes man"
Nothing scientific, no proof to anything, just a gut feel as someone who has worked with his brother for nearly 20 years now. It is just different. While you are tougher on your family, you also give them more responsibility and leeway.