talk over someone's head

talk over someone's head (third-person singular simple present talks over someone's head, present participle talking over someone's head, simple past and past participle talked over someone's head)

1. (idiomatic) To communicate something beyond the level of comprehension of the target.
   • 2001, Dan Brown, Deception Point, Pocket Books (2001), →ISBN, unnumbered page:

     NASA was often accused of talking over the public's head.