Hi everyone - I was wondering if the experts here can help confirm what I learned today. I was searching for a LAX to TPE ticket on United.com and noticed that I could not find any nonstop flights on partner airline EVA Air for purchase where the entire itinerary was on EVA. I found this strange because I could have sworn in the past I could do this (even though I know the price is typically higher to purchase through United vs EVA's website directly). The reason I'm searching for the flight this way is because if I buy directly through EVA, I won't get credit for United elite PQD. Long story short, I called United.com website support and they explained to me that United implemented a new rule where search results for all flights from their website for purchase require there to be at least one segment be a United operated flight. Has this rule always been in effect or is this something new?

I know the other airlines don't do this because for example on Delta.com I can still purchase a ticket where the entire itinerary is on China Airlines.