CX has an interline agreement with OS. But on separate PNRs, it would be up to OS whether they will check through your baggage onto the CX flight.
I see. I guess I will ask during check-in and if they are not able/willing to do it, at least i have 3 1/2 transit in FRA. That should be enough time to collect my luggage and then check-in again at CX's counter. Thanks
sxc !