food for thought when booking separate PNRs
I don't know the circumstances of your booking. The 2 in first class could conceivably represent the Plat and companion upgrade.
If booking separate PNRs, you can maximize the baggage allowance by booking non-elites in F (thereby conferring 3-pice baggage allowance each) and the Plat in Y (still having 2-piece baggage allowance).
Of course my point is moot since you've already ticketed.