Flying EZE->DEN in April. I was about to book a Saver Award seat (30k) through IAH but noticed a business class seat (50k) that goes EZE->LIM->IAH->DEN. I have friends in LIM and would love to stop over. I'm not familiar with United and stopovers. When I try to book this as a multi city itinerary I get an error (but that is how I would book an AA award). Award is with Taca for part of it. Can someone point me in the right direction? Anything else I should be looking into?