Dear Harry,
I wonder if you are referring to what Jayaratha calls structural unity (sañcaya nyāya) in the Tantrāloka-viveka (TĀV). Abhinavagupta ends each āhnika of the TĀ with the first half of the concluding verse and begins the subsequent āhnika with the second half of the same verse. This strategy is followed in all chapters except in āhnika 36. See TĀV: iha āhnikādāhnikāntarasya sañcayanyāyena parasparamanusyūtatāṃ darśayitum ekenaiva ślokena
tatparyantaprārambhayorupasaṃhāropakramau karoti, iti asya granthakārasya śailī | (cf. TĀV, Vol I, p. 309,
KSTS
). Also quoted by Navjivan Rastogi (1987:76-78) in the "Introduction to the Tantrāloka" (MLBD).
Also see TĀV, Vol 12, p 390: iha āhnikādāhnikāntarasya parasparamanusyūtatāṃ darśayitumādyantayorekena ślokena
pṛthagupasaṃhāropakramayorupanibandhe.api sāṃprataṃ granthānte tadāśleṣamatyantamavadyotayitamekenaiva
ardhena yugapattadupanibandha iti |
I hope this helps.
Best wishes.
Mrinal