I've never redeemed a OW award but I've read it here quite often that the distance is calculated from A to B, regardless of a required connection at a C point. Apparently it's necessary that the 'system' understand C to be a connection and not a stop-over.

There are FTers that are used to redeem this kind of awards and hopefully will be able to join in with their comments on what's necessary for you to correctly redeem your award from AA.