Missed connection depends on the airline at the moment. If you miss a connection because of a delay through Dubai, the local carrier will squeal that you are not covered (unless the delay in the EU was more than 3 / 4 hours) because the rules do not apply to them, even though the arrival time at the final destination is key.
This is currently being challenged in the courts and a verdict is due 'after the summer recess' whenever that will be.