He was fearful 'to the extent that' he refused to leave his house. [=he was so fearful that he refused to leave his house]
This new tax affects everyone 'to a greater or lesser extent'. [=it affects some people more than it does other people]
He studied only 'to the extent that' was required to pass the exam. [=he studied just enough to pass the exam]
(..) you keep them all headed in the same direction. I forget you dress like a cowboy, but that's about the extent of it. See that one? - Yeah. - That's the Judas steer. Rest will follow wherever you make him go. (..)2016 TvShow: Westworld Title: The Original Season: 1 Episode 1