Re:The Queen has more power over British law than we thought
by RandomBK on Tuesday February 09, 2021 @11:57PM
(#26085866)
I don't disagree that a unified head of state+government would be unusual, but most parliamentary systems were also heavily inspired by the Westminster System, so that might not be a great argument one way or another.
You could merge them, South Africa-style if you wanted, but it's pretty unusual. Most parliamentary systems separate the two.