διάλλ-ηλος · diall-ēlos — LSJ
reciprocating, λόγος Stoic. 2.90; interchangeable, of the order of words, A.D. Adv. 126.2; confused, of argument, Id. Pron. 50.20; δ. τρόπος argument in a circle, S.E. P. 1.117, 2.68; δ. δεῖξις Dam. Pr. 290.
interrelated, interdependent, Plot. 6.8.14.