Will be making a booking shortly using a Chase 2-4-1 Companion Voucher. I know in the past others have said they make reservations for the outbound flight as soon as it becomes available (without applying the 2-4-1 voucher) and then call back when the return becomes available to add that fight and apply the Companion Voucher. Is this still allowed to be done (realizing I will be incurring change fees to do this)?