I have heard that the Punctuality Record of this train is just Great. I think that IRI Member Gulshan Sir was telling that this train trails the Guwahati Rajdhani Exp via LKO while going to ASR between BSB & MB. In downward direction, it trails the Sealdah Rajdhani Exp between MGS & Dum Dum Jn:-)
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PS : This train does not have Pantry so it would be better to carry Home Cooked Food & then further depend on IRCTC Food :-P