I booked MNL-DOH-MAD and MAD-SVQ on separate PNRs and in two different classes. MNL-DOH-MAD was on business while the MAD-SVQ via Iberia Express was on economy. I asked the check in agent in Manila if she can through check our luggages to SVQ. She asked me to show her the Iberia Express ticket and voila, she granted the request.