Marmalade on toast
What it means? Nominally there is not much overlap between US Airways and American flights out of PIT. Just one American flight to New York City is all I see that overlaps directly with US Airways right now. Of course, there could be all sorts of secondary impacts as the potentially combined airline adjusts its flights down the road.
Remember Pittsburgh Pins Hope on Airport
The toast you ask... gotta read to the end of that last link.