I have listened to the feedback model and have applied it when working with directs.
if you wanted to give feedback to a boss who repeatedly takes credit for proposals or initiatives you have authored, it would seem difficult even if you present it in a casual way.
To boss: "On multiple occasions, when we presented proposals to upper management that I authored or initiated, you have said that you created it or you instructed me to do this. This creates a lack of trust which I am trying to develop with you. Also, it makes me apprehensive to present additional ideas to you."
After this, there is no way I can say, " So what can you do about this?"
All hypothetical of course.