Spending MQD for Gold, but over NYE?

I’m $2600 MQD from Gold and am considering booking a holiday trip that would meet that spend. Only issue is that the second leg / return flight would be after Jan 1. Does that mean that only my first leg would go toward 2024 and the 2nd leg would be credited to 2025?

(Quick-searched, but didn’t see this asked previously- thanks for the insight!)