Originally Posted by Kacee

Nonsequitur and an overbroad generalization. OP was departing on a *A flight, but that wasn't sufficient for *A lounge access, since he is not *G and his onward *A flight didn't independntly qualify for UC access. If OP had been flying J on UA metal, his arriving flight would have granted him Polaris lounge access. And if OP had been flying OW, his arrival in J combined with an onward OW flight would have allowed access.