I had an unexpected win a couple of weeks ago flying out of SYD. Knowing the story, didn't even try ask for the bags to be interlined (separate itinerary on UL ex CMB that only had my QFF number to link them). You can imagine my surprise when the check-in desk asked if I wanted the bags checked all the way through to the destination on the other booking - this was as she was in the act of putting the tags on, which had already printed to my final destination! Both normal revenue tickets, no award travel involved.