Have a flight from JFK->FRA in SQ, and FRA->FCO on LH, booked on entirely separate awards. The connection is about 90 mins -- feasible if I stay in transit, but not if I have to pick up bag and check in again, especially since I don't have status on H. So trying to figure out if I can check my bag all the way through from JFK to FCO; according to KVS, SQ has an interline agreement with LH, but wondering for any first-hand experiences. Has anybody tried this with success?

Coudn't get definitive answer via search.

Thanks!