The long-running attempt by Lufthansa to acquire a stake in the state-owned Italian airline Ita took another possible step forward on Tuesday, as the parties involved offered the European Commission further concessions. Brussels had been offered “additions” in line with the commission’s demands, the Italian Finance Ministry said, without providing any details. Lufthansa also refused to provide details about the apparent concessions. Lufthansa wants initially to buy a 41% stake in the state-owned airline Ita Airways, formerly Alitalia. In return, Ita is to receive €325 million ($350 million) in…