The craft for HKG-ORD today had a problem today 2/15 so they switched the craft originally planned to do HKG-SFO for the ORD (last minute gate change). The SFO flight is now showing delayed to 2/16.
I am sure the SFO pax are getting rebooked on various airlines... Otherwise they will have to spend an extra night in HKG.
Luckily, I was on the ORD flight and we arrived ORD 2 hours late.