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Completely unrelated, but I wonder if you want to look into a developing situation with Alaska awards. Certain routes are being completely blocked off.
JFK to LHR nonstops do not show up on AA/BA, SFO to TPE nonstops on Starlux, it's possible other routes are affected.
It's not a matter of not seeing partner space, those airlines are still releasing awards on other routes like BOS/PHL/CLT/ORD to LHR, but Alaska simply has zero space to JFK/LGA (EWR awards/connections are still shown). They're zeroed out across all calendar dates for the entire year. It can't even render connections like LGA-ORD-LHR or JFK-MAD-LHR. But incidentally other routes can offer them as connections, you can fly LHR-JFK-CLT, so something odd is going on w/ Alaska.