Hi there - I am a CO Gold and flew EWR-SFO, SFO-OGG, OGG-LAX, and LAX-EWR

FYI - for the first three flights (all on UA metal) I (along with quite a few others...) was upgraded via CO/UA UDU system. Again, this may have had to do with the flights I chose, but still - no SWU needed, though there was a slight element of surprise re: upgrade going through.