Do BA incorporate single engine taxying? Maybe it wasn't the cabin, maybe it was a late starting of the second engine. Easy to know on a turboprop but almost impossible to detect on jet. When my company started single engine taxi procedures we were pressured all the time by atc at a London airport to get it started. When it was pointed out to them that virtually every aircraft taxying to the hold are on one engine, including the orange brigade etc, their response was "oh are they?" They can see the props not rotating, but not the jets. Do the engines on BA's 319/320s need 2 minutes after start for thermal stabalisation?
On a separate note, yes I've pushed back at the same time as an orange airbus only for them to call for taxi with the tug attached to get ahead of us, and also had them parked next to us and they've seen our doors close up and airbridge removed only for them to call for push and start with their airbridge still attached.
