My children (3) and I travelled from Auckland to London via Chicago. The first leg was with New Zealand - flying in behalf of United. The 14 hours flight was great, but we had 2 hours in Chicago to get our connecting United Airlines flight to London. In hindsight, there were SO many reasons why we were never going to make the connecting flight. Arriving in Chicago was like entering a third world country, no transit lanes, having to collect our luggage. It took so long in customs, with no absolutely no provision for transitioning customers that so many people missed their on-going flight.
United’s response was outrageous - they blamed customers. I told them they sold a flight with a 2 hour stop over, which was totally unrealistic, considering the archaic requirements of entry. Most people in the same situation where put on a flight for the next day (24 hour wait) and told to organise & pay for their own accommodation. I overheard United allowing for a well dressed couple to take a British Airways flight leaving in a few hours. I insisted on the same & they reluctantly put us on the flight. The couple after me where told they could only take the United flight the next day. On the British Airways flight, there was a lot of room - at least 20 seats free - if United had really cared about their customers we would have all be put on that flight. Appalling service.