Requested via email with copy of UA status card and 2024 flight activity, got a positive response for a 90-days A-List membership with challenge in less than 24 hours: "You entered our exclusive Southwest status match promotion and have now officially qualified to earn promotional Rapid Rewards® A-List for 90 days from today. Extend your new A-List status for 12 months by booking and flying three round trip revenue flights (or six one-way revenue flights) within 90 days of today. Please note that any previously booked reservations will not qualify towards the promotion."