What's wrong with today's (21st Nov, 2014) 12346 GHY - HWH Saraighat Express ? It was running well upto Ambari Falakata, but it halted for almost 1hr 10mins at Ambari Falakata, AFAIK, there is no loco failure, it is waiting for some trouble in the train that is ahead of it.
Can anyone please throw some light ?