There may not be enough enough weekly frequencies in the bilateral to start service next year. Indeed even for 2020 they may have to petition the DOT to strip American of its route authorities for ORD-PEK and/or ORD-PVG. AA has canceled those routes but isn't voluntarily returning the route authorities back to the DOT. Delta has also applied to start MSP-PVG in 2020, and for both of those to be approved the DOT will have to force AA to give up authority for at least one of its canceled routes.