For over a thousand years while this culture existed, the Proto-Germanic R1b and R1a-L664 tribes would have acquired vocabulary from the pre-existing Corded Ware population that they assimilated, which was itself a blend of Proto-Balto-Slavic languages (linked to haplogroup R1a-Z284) and languages of non-Indo-European origin (linked to haplogroups G2a, I1 and I2).
https://www.eupedia.com/europe/Haplo...shtml#Germanic
