Sat in the LHR Flounge waiting for the delayed BA308 departure to CDG to announce boarding. To my surprise, despite regular app refreshes with a rolling delay (and screens updated to show the revised departure time of 12:25) the app still shows A10 as open, and never showed a Boarding message. The screens in the lounge only showed 'Gate Open', and if a 'Go to Gate' or 'Now Boarding' message was shown it can't have been for more than 1-2 minutes at best.

The flight has pushed back and it seems all other PAX made it, whether they were waiting at the gate or not, or in the lounges, for the delayed departure I do not know, but interested in whether this is just my oversight, or whether I'm justifiably on the war path...