When all of these conditions are met:
Another Herald rule does not match: H19 [Git Flow Branches]: Free-For-All Branches
Another Herald rule matches: H17 [Git Flow Branches]: Repositories for which Git Flow is enforced
Another Herald rule does not match: H18 [Git Flow Branches]: Project members allowed to land stuff.
Take these actions every time this rule matches:
Block push with message: Push to feature/*, hotfix/*, release/* or support/* branches, submit differentials.