Exactly. Enron was a publicly traded company doing weird circular financing stuff. It was all in the open for anyone who cared to look. Just no one did until the music stopped...

We’re a bit too far if we assert this. The weird circular Enron stuff wasn’t all in the open, was by wholly owned subsidiaries, and the downfall was massive trading losses that could no longer be hidden by shuttling money to and from subsidiaries at the right time. A hole in a balance sheet is quite different from a purchase done by financing, thus “circular financing” when applied to both means “things we worry about that involve payments between 2 entities”