Originally Posted by
oklAAhoma
If the records are split, the companion will not have a chance to clear until his/her own window.
IME you can link the divided PNRs and maintain higher-level priority for the companion; however, linked upgrades are not automated and one usually needs to call in to get the companion upgraded at the sponsor's window. In this case, even if the records are split, the stickers come out of the sponsor's account.