Steve Wynn's BBJ routinely does Macau-LAS at LRC. It is 'privately' operated, and was at one time on a FAR125 cert.
It seems to me I heard that it may have 'migrated' to a Macau Reg. To make things 'easier' regulatorily-wise.
I have also departed Macau within 5 minutes of this flight in a G4, ran at M.80 to PANC, refuelled, and continued to LAS arriving within 5 minutes of same nonstop flight. Sometimes earlier, sometimes later. We were at FL410 and above, they were at FL310 and sorta above.