OS is listed on TG's website as an interline partner. I believe all Star Alliance carriers interline with one another these days, if I am not mistaken.
Be sure to allow ample connection time, and that separatly purchased tickets constitute a "legal" connection.
Sometimes check-in agents aren't entirely competent. To make the process easier, I fly with a printed out copy of the itinerary to which I am connecting. Showing this to the agent, and citing the interline baggage agreement, should work to get the bags checked through.
Last edited by MikeFromTokyo; Mar 13, 2017 at 1:21 am