Originally Posted by
MichaelA380
I also see a different issue here - as you have a one-way JNB DOH ticket and Qatar is currently closed for non-nationals / non-residents, it is quite possible you will not be allowed to fly at all (especially if you have luggage to check in, as there is no guarantee that QR will be able to check it through to ORD, so that you can claim that you will remain in transit).
That was my first thought - refused boarding in JNB as they consider you Doha bound. Anyone can mock up a ticket printout to show for another leg, but whether it's accepted is another matter. Even if check-in can "see" your booking to ORD on their system, they may not be able or allowed to check through luggage or issue boarding passes or any other number of things which end up in not travelling.