For clarity, AA didn't directly tell me that weather was the reason. I read it on ExpertFlyer....which I assume is getting that info from AA - I perhaps shoud've made that clearer. I had no idea there were multiple delays and bad weather at DFW itself - I didn't check - I was too busy trying to get my rescheduled flight ticketed.

It was BA incedentally who called me up to say that my BA flight had not been ticketed....but they couldn't tell me why. I went to AA's check in desks and they were incredibly unhelpful and said there was nothing they could do, so I went back to my hotel room to skype call AA again, who eventually figured out that it hadn't been ticketed because I'd already checked into the Iberia flight, so they needed to call IB 'uncheck' me in from that before re-booking me onto BA....fair play to the BA Gold line agent for spotting this, else I doubt I would've made that flight either.

Claim made for downgrade and delay. But I'm not expecting delay compensation, and really it doesn't bother me as I actually got home sooner, it's more to do with the inconvenience of missing my MAD meeting....but weather is weather, I'm not going to push back if that is the reason it was delayed....that's life!

As a data point I will report back once AA respond....