Although it is unknown which critical values should be used for the ECT(-1) coefficient, the coefficients of y(-1) and ECT(-1) are equal, while both measure the same thing (i.e., the opposite of the speed of convergence). Based on that, I think that the statistical significance of ECT(-1) could indirectly be checked through the bounds t-test. Might this be a good workaround solution, thus making the bounds t-test absolutely mandatory in both the one- and the two-step approach?
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