Originally Posted by
pinworm
As to the rest, it happens and you did book two itineraries on different carriers, meaning your first and second flights were unrelated and you would not be accomodated all the way through. Stick with one carrier.
The OP clarified his planned travel, but this statement needs to be corrected in any event. If the OP is on a single ticket, the carrier that delivers him late to the connecting point is responsible (from customer service and financial viewpoints) for arranging onward travel to the ticketed destination, be it on its own aircraft or others. That's the IATA convention, irrespective of carrier alliances or elite status.