A fair point, but what's disappointing is that Mr Stringer, in criticising Charlie Cornish, appeared not to take the opportunity of stating that expansion at LHR needn't be at the expense of MAN which can grow in its own right, if he believes that to be the case. If that isn't his view, then coming from a Manchester MP, it is a little worrying.
It isn't, and it can: MAN can and should grow in its own right, another rwy at LHR has no bearing on this.
So instead of inconveniencing ALL AA passengers with a bus transfer between T1 and T3, why not encourage AA to move back into T2 which is better designed for handling longhaul flights, and set up a proper transfer bus service between T2 and T3 just for the minority of AA passengers who are actually making a connection ?
Unless there are plans to house all Oneworld carriers in one terminal (unlikely), this would make sense.
Having all USA flights back in T2 might also be helpful in future if US pre-clearance from UK airports ever becomes an option.
Indeed, is this on the cards?