The Northwestern University School of Law began as a department of the Old University of Chicago and transferred completely to Northwestern when Old UC folded, whereas the Baptist Theological Union had formed a separate theological school in 1865 that would later be grafted into the new University as the University of Chicago Divinity School.
The Northwestern University School of Law was initially a part of the Old University of Chicago but later separated to become an independent institution when the Old UC dissolved. The Baptist Theological Union created its own theological school, which eventually became part of the new University and formed the University of Chicago Divinity School.