I have booked a flight through BA from MXP to CANCUN going via JFK, Its being operated by American.

Now im thinking about possible delays- if the first flight was delayed and i missed the 2nd one due to this what would happen? Do AA sort out accommodation ( as far as i see no other flights to cancun after on that day) or would i be stuck in New York. If that happens what is the likely hood of being provided with accommodation etc