It gives a very important advantage to BRU. Of course it is very sad that AA has to close a very ancient line from BRU to ORD but it create a free space in the morning at the B-pier. And it is needed because the morning is quite full.
A very important advantage... I'd say it's even excellent news that Brussels loses a daily direct transatlantic flight to free up a gate capacity
Are you being serious here!?
Now there is more space for Thai Airways and United Airlines (B777 which stands on the tarmac) on the
B-Pier.
It won't make a difference as they obviously won't let a B777 occupy a gate for 5-7 hours in the morning peak.
It is already confirmed for a while but the start date is not yet confirmed.
Probably a semantic discussion, but certainly in aviation the start-up of a route is only confirmed once you have the plane, traffic rights, slots and a start date. With soaring fuel prices, possible economical downturn etc., nothing is "confirmed" until the launch is ticked off and the flights are loaded in the systems.
For AA, they can start Miami-Brussels B767.
What makes you think Miami would work for AA, if they can't even make Chicago work?