That's not true. Both sides still have the ability to negotiate anything at any time. There's multiple Letters of Agreement that were agreed to in between contracts.

I'll agree that extending the contract by two years is a concession, but both sides can negotiate any issue at any time.

At this point, I want ALPA to concentrate on contract enforcement rather than negotiating a new contract. It doesn't do any good to get a great hard fought contract if the company isn't going to honor all of the provisions of the contract.