Originally Posted by
theise
are there any gotchas to be concerned about in trying to SDC the return flight onto something operated by United? In case it matters, I don't care for ANA flights anyway, the seats are too hard for my taste.
Technically SDC is only available
from a UA operated flight
to a UA operated flight. In other words, the rules do not allow SDC off of NH and on to UA.
But it has occasionally been accomplished. YMMV.