First of all, if this is not the right place, please feel free to suggest where I should post - or the mod can move it to the right spot. I have 2 rather complex award itineraries booked with UA miles, although no actual flights were done on UA. These itineraries involve AC, CA, OS, and SQ, with stopover and open jaw. In the event that one of the connecting flight had issues (delayed, or cancellation or what-have-you), who do I need to contact to resolve? Is it UA or the operating airline? Oh, and I found out that it took a while for UA phone agent to get SQ segment booked. I had to endure 2 transfers and spent about 75 minutes on the phone with holds etc, but the good thing is it is ticketed now.