I've been toying around with divided developers recently and can confirm that what Gerald wrote is true. Following the recommendation in Anchell&Troop I developed for 4 minutes in each bath and the negs came out extremely underdeveloped. Extending bath A to 8 minutes resulted in good negs. Correspondence with another APUG member put me on the right path there, i.e. that most of the development happens in bath A. In hindsight and looking at the formulas, it looks obvious.
Originally Posted by Gerald C Koch