Lucknow, Dec. 10 -- Operations at the Chaudhary Charan Singh International Airport here remained disrupted for the eighth day in a row, as ongoing technical and operational issues at IndiGo once again triggered several cancellations. On Tuesday, the carrier abruptly cancelled eight of its services. Several passengers said they learnt about the cancellations only after reaching the airport. While Sunil Shukla, who was on his way to Ahmedabad, said he received no prior notification from the airline, Bengaluru-bound Preeti Tewari reported she received a notification only minutes before her flight was to depart. Confusion and frustration escalated as families, business travellers and those with onward connections scrambled to find alternatives. The cancellations disrupted Lucknow's connectivity with six major cities, including Delhi, Mumbai and Bengaluru....