On Saturday 12669 Ganga Kaveri departed at 17:40 from Chennai and 12578 Bagmati departed at 18:05. But to my surprise I found Bagmati reaching Nagpur well ahead of Ganga Kaveri i. e 1 hr before. Bagmati overtook Ganga Kaveri somewhere between Warangal- Balharshah. At Pipariya Bagmati was halted for 1 hr and Ganga Kaveri was given preference...Bagmati badly needs time revision