Originally Posted by LAXative

No such luck. No return BP at DFW because the HKG-DFW departure will be >24 hours prior. You arrive DFW-HKG at ~6pm, so the return flight is still the next calendar day. Also, the CX and other OW lounges close overnight, leaving only the Plaza Premium lounge that's open 24 hours, both landside and airside.

The only think I can think of is to buy a fully-refundable ticket for a late CX departure the same calendar day that you're arriving.