Not really. The Skyteam policy is the same US or not US. Lounge accees is provided on domestic flights if in connection from/to an international one. Some Skyteam airlines go further for their own FFP members (e.g. AF does provide lounge access for FB Elites Plus members for domestic flights in France).
For OP case, as he is in connection from a long-haul flight, he/she will have lounge access in CDG 2G connecting to BSL thanks to travel in J class on long-haul + DL Elite Plus status.