So Whats the advise? Try for 12903?
Only 1 case in this, if my flight to DEL is late (One Off UnLucky- D Day scenario) and 12903 is more or less perfect, I will be in Big bowl of soup.
Was just tracking the flights path from CCU-DEL, realized that The actual flight starts from DEL at 530am before it goes to Kolkata and then returns to Kolkata from somewhere else before again flying to Delhi. Hence, a big exclamatory mark on its On-Time performance!!!