By divergence or convergence I don't mean in terms of rules, they clearly have been trying to converge in those terms. But was that fast enough to translate into economic convergence? I mean, have the (converging) rules managed to produce a convergent economy or not?
I suspect there will be different answers depending on the indicator chosen and/or the counterfactual scenario, but I still think this question would be informative even just to what as what those metrics are (on which there is convergence on which there isn't).
After a bit more search, it seems there are a lot of papers on economic convergence and divergence in the EU. Some are pretty extensive (understatement). Apparently it's a topic that never gets old. So, to better fit this in the SE format: if you had to give an elevator talk/pitch to someone about this EU economic convergence/divergence issue (in terms of indicators/outcome, not policies), what are the main aspects to touch?