The QXC does not have to be done in one day. (What if you do it at night, and happen to be in the air at midnight, for example?)
I did mine overnight - flew from Phoenix to Las Vegas, with a stop along the way, one day, spent the evening in Las Vegas (trying not to loose the money that I needed to pay for the aircraft hire!) and flew back the next day. Didn't seem to cause me any problems when I applied for my CPL.
I think a bit of common sense is required, though. I doubt you could fly each leg two weeks apart and still claim that it is one flight.
FFF
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