Can the Second District Appellate Court review an order issued by the First District? Sure, if it’s an interlocutory order, not law of the case. Here’s what the Second District said about this:
“There is but one appellate court … Thus, a panel of the Second District of the Appellate Court revisiting, during the course of an ongoing appeal, an issue that a panel of the First District of the same court implicitly addressed in ruling on the motions to transfer is no different from a successor trial judge revisiting the interlocutory decision of the trial judge he succeeded. Consequently, we reject the foregoing arguments by Ameren, ComEd, and the ICC that the law-of-the-case doctrine precludes our dismissal of case Nos. 2–06–0149 and 4–06– 0118.”
The case is Commonwealth Edison Co. v. ICC, 2-06-149 (2006), and you can get it here.