I got upgrade OGG-LAX 2 weeks ago on award ticket at T-96, but LAX-LAS night before. My chances of upgrade on both were (IMHO) same, so UA’s decision on CPU timing seems arbitrary sometimes.
One would think they’d run OGG-LAX process at last minute since they’d have good chance of selling ToDs on a 5-hour redeye. There’s a chance they did ( to detriment of lower status flyers), but I didn’t watch once I got mine.