Rail, Tram and Bus Union denies it was a concession, suggesting train officials misread its initial demandsFollow our Australia news live blog for latest updatesGet our breaking news email, free app or daily news podcastAn emergency court hearing might be needed to ward off the largest shut-down in recent memory on Australia’s busiest train network. Trains from Newcastle to Wollongong and across Sydney are due to lay dormant from Friday morning until Sunday night amid an escalating pay dispute between the NSW government and drivers.But early on Wednesday morning Transport for NSW said it had agreed with the union to