Thanks guys for your responses. Apparently AA flight is outside of legal MCT. There is however a B6 flight that seems to be allowed. It arrives at 20:55 to terminal 6 thus leaving 1:35 before BA flight. Thus my additional questions are:

- Does JetBlue have a ticketing agreement with BA? If it does not I will be worried travelling on separate tickets and on the last BA flight of the day with few alternatives.

- What would you recommend AA (partner) arriving 1:05 or B6 arriving 1:35 before BA departure?

I am flying business (I) class.