Originally Posted by
WineCountryUA
Usually without even a codeshare but unusual can happen.
Would be a major no-no for a TA to do this.
How about placing a refundable UA segment on a later date as the very last flight? I believe the (at least old) rule used to be that on an international ticket, you plate on the carrier of the first _overwater_ leg. In this case, there is none. Or would the refunable segment become non-refundable if the earlier legs were, regardless of fare?