Originally Posted by
garykung
For missed connections, they are booked in the next available flight. So they will be put into the flight if they have inventory.
FWIW, it's not uncommon for misconnects to be forced onto flights with no shown inventory, especially if they are statused passengers with no other reasonable reaccommodation.
UA is very good about doing this. In ORD, for example, they'll often purposefully zero out a flight on an IRROPS day and then the planners can allocate the space as they see fit. So a flight that may be over by 2 with an authorization of 12 over will show F0 Y0, and the computer can't book the space. But a planner or 1K desk can get you on.