Originally Posted by
sinoflyer
Once you purchased your U.S.-NRT ticket, it is fait-accompli and cannot be "linked" to the NRT-CTS ticket that you plan to buy now. Linking reservations only works in the area of transferring bags, etc. I think your only option now is to refund/reissue your current NRT ticket in exchange for a U.S.-CTS through ticket.
I just called UA 1P desk today. We can buy a Japan Airpass through the *A network to add domestic flights on ANA. You have to be a nonresident of Japan and be flying international into the country on a *A carrier. Still waiting from UA for pricing, but the ANA website lists the ticket as around $130 or so O/W. You have to buy the international ticket first and then can add up to X number of domestic flights inside Japan.