I want to know the answer to the following question:
What is the relationship between Indo-Iranian and Baltic languages?
All the background I'm provided with is that "In order to explain the common features shared by Sanskrit and other Indo-European languages, many scholars have proposed the Indo-Aryan migration theory, asserting that the original speakers of what became Sanskrit arrived in what is now India and Pakistan from the north-west some time during the early second millennium BCE.". Is that enough to answer the question?