Chicago O’Hare started offering a bus between terminal 3 and terminal 5. In theory this should save a lot of time for American Airlines passengers in terminal 3 transferring to international airlines departing terminal 5. (United passengers from terminal 1 could walk over to terminal 3 to take the bus if they wished.)
The bus was supposed to run from 8:30 a.m. until 8:00 p.m. at least that’s how it was announced. Except that it doesn’t.