I would just like to enquire why this was booked on BA to Heathrow and then Delta to JFK, rather than BA throughout with a much simpler connection inside T5.
I am surprised it's all on one ticket with a connecting time of 85 minutes when the official MCT from T5 to T4 is 120 minutes. Who issued the ticket ?
It does seem that Heathrow takes a "for our own convenience" approach. Even within T5 the MCT is 60 minutes. At Munich Lufthansa has a MCT of 30 minutes and, guess what, I've never missed one there at this minimum level yet ! Baggage always makes it too. You're not going to tell me that T5 is larger than the whole of MUC. If time is short there are agents at the arriving aircraft, they know who is on a short connection, and they rush you through. Even on minimum-price fares (ie notably less than BA). Why can't Heathrow have the same approach ? Why ? Why ?