The evidence we have till now shows that I-Y3120>Y18331 came way later in the Balkans. Therefore unrelated to the cultures of the Vučedol, Četina, and Balkano-Lower Danubian complex i presented here, https://www.eupedia.com/forum/threads/34414-Genetic-Origins-of-Minoans-and-Mycenaeans/page80?p=598415&viewfull=1#post598415, associated with the Graeco-Phrygians and subsequent proto-Greeks. All current evidence suggests that I-Y18331 came as a result of the Celtic expansion in the Balkans during the Hellenistic period.