“…We argue that the combination of these two mechanisms explains the nonlinearities of the policy integration in the long run, although they remain seldom investigated (Adam, Hurka, Knill, Peters, et al 2019;Bolognesi & Nahrath, 2020;Candel & Biesbroek, 2016;Trein et al 2020). Results support the Institutional Complexity Trap model and contribute to the nascent explanations of policy disintegration through uncoordinated policy accumulation and lack of policy coherence (Adam et al, 2019a(Adam et al, , 2019bBiesbroek & Candel, 2019;Cejudo & Michel, 2021;Howlett, 2019;Limberg et al, 2021). The lack of policy coordination may have numerous causes; for example, conflicts among administrations or MP coalitions (Hustedt & Danken, 2017), which contribute to the Institutional Complexity Trap.…”