How far would a roman coin travel?
Where would the goods brought into the empire come from?
Where would goods be sent out to?
What sort of goods could survive travelling such distances, and how would they be conveyed over such vast distances?
We do know that Roman coins and Indian goods have been found in South India and Rome respectively.
Indian traders used to trade till Egypt directly and Roman traders would take over from there and this process worked in the reverse.
Indian export guilds actively traded in Indian luxuries AND Wootz Steel with Egypt, Rome and China to the east.