And the same being reported from Pannonia. And looking where massive immigration in the meantime, between the MBA-EIA, should have come from, there is practically no way for a population expansion that big to have affected Eastern Hallstatt, the Balkan and the Carpathian regions, which all seem to have harboured significant amounts of E-V13 in the Iron Age, plus the high likelihood of a fairly early, somewhat chaotic spread during the LBA-EIA up to the West, deep into later Celtic territory, like the E1b among the Gaulish samples.
There was just one sample from the wider Hungarian sphere, but unfortunately we don't know from where exactly. If it was from close to Slovakia, that's like a smoking gun for the association with later Southern Urnfield groups. If it was there and nowhere else.