Do you see the mediator releasing us soon? We can't meet with her currently. Would an impasse be declared at this point?

If a unilateral work and pay system were implemented, that would be the end of Delta. The union would definitely call for a strike and in a little to no revenue environment requesting a release would be the nuclear option. Unmitigated furloughs without regard to seniority and no work rules other than FARs would be the best way to recover the company. There would be no reason for anyone to stick it out. I'd be looking for work the day a request was submitted because chapter 7 would soon follow. If there is no agreement there will be no work.