I'm posting a positive experience from this!
While I couldn't get either of my partner confirmation numbers from the award itinerary on united.com,
I was suprisingly on the phone for only 2m28s to get the OZ PNR, and interestingly enough, the woman (very nice and efficient!) said that SQ doesn't give UA PNRs at all - you just have to call up with the flight number and dates for seats...I could have sworn that in my past (PMUA), i've actually had SQ PNRs given to me, but regardless, given that we are now in COdbaUA, PMCO must never have been privy to the SQ PNRs on award trips...
Regardless, while the website didn't show the PNRs for partners, my phone call as a 1K was answered and my PNRs were given in under 3 minutes at the peak (14h20 on Wednesday) of the day...granted, i'm a 1K, but still, I was pleasantly surprised, in a good way!
-jeremy