Closed economy and small open economy leads to similar results in the long term?

[liaoandi]

Thanks for the paper! When I tried to understand the plots in Dynamic Analysis of Tax Cuts and Jobs Act, I noticed that although there will be some fluctuations in the process, eventually, closed economy and small open economy leads to really similar results given enough time. So does it mean that both conditions have reached their equilibrium point? And ss it true for other assumptions for other macro economy situations as well? Thanks!