Graeco-Armenian languages
Graeco-Armenian (or Helleno-Armenian) is the hypothetical common ancestor of Greek (or Hellenic) and Armenian branches that postdates the Proto-Indo-European language. Its status is somewhat similar to that of the Italo-Celtic grouping: each is widely considered plausible without being generally accepted.
Source: Wikipedia — Graeco-Armenian languages (CC BY-SA 4.0)