A friend did OLCI for a BA flight from TLV to LHR for tomorrow (Wednesday 17-Dec). Now she has received a text that flight departure is delayed 4 hrs ... the new estimated arrival time means that she will miss her connections for the next two flights in her itinerary.

BA Call Centre has said that nothing can be done for rebooking her onward flights since she has already checked-in, i.e. that she has to wait until she arrives at the airport in TLV for actual check-in on morning of 17th.

Is there anything that can be done about rebooking her flight connections before reaching the TLV airport? ... she has stated that all the onward flights are also on BA.