hi, please can anyone help me regarding this. A few websites have said i am eligible, others have said that i am not.

I was scheduled to fly AA 38 Miami - Heathrow 9.15pm 26th April and then connection AA 6627 (operated by BA) 1.30pm 27th April. However AA 38 was delayed 21 hours resulting in me getting a new connection BA 1386 and arriving in Manchester, UK 20 hours late. The confusion is part of the journey is AA (non eu) and part is BA.

I would be really grateful if anyone can shed any light. I was travelling with 2 kids and it was a complete nightmare.

thankyou