It's worth noting that most airlines can view most tickets given the name and ticket number (you can use the saudia website to view the gory details of tickets

It's worth noting that most airlines can view most tickets given the name and ticket number (you can use the saudia website to view the gory details of tickets issued by most TAs and airlines yourself if you wish). Whether or not they do is a separate question, but United certainly do check (partly since the itinerary can grant lounge access even if the flight you are taking next doesn't).