I posted this question in Mileage Run but got no response, so I'll try here...

Does anyone have any experience of doing a same plane turnround in JFK, i.e. HKG-JFK-YVR which I have scheduled to do in a few weeks. Am I likely to enecounter any difficulties at JFK or, indeed at YVR when I return there since I will be in transit to DFW (arr YVR 02:45, dep to DFW at 07:15)?

Any advice gratefully received.