I had a bag on this flight. I was led to believe by DL bag agent that there were thousands of bags like mine that just didn’t get loaded before the plane on which the bag’s owner had boarded had to leave. They made it sound like this had been happening day after day for weeks, since early May and that’s why we saw huge piles of bags when we landed weeks earlier in LHR. The story I heard about this flight is that DL consolidated passengers onto other flights to free up one airframe for a luggage-only flight. I wonder how many bags are still there from days/weeks ago? How many more luggage-only flights are they going to need to do to clear the backlog?