Hi all, apologies if this is the wrong thread - my parents flight sept 5 Oslo-ams on klm 1200 was delayed causing them to miss their connection to yvr. They were rebooked via yyz and arrived 8.5 hours after original flight. I believe they are due compensation but klm has denied the request since they said it was due to air traffic control. However, I think my parents were told something else on the plane (maintenance) - is there any way to check the real reason for the delay? Thank you very much