Trivandrum chennai mail is already arriving at 07:50 AM at Chennai. This train belongs to TVC div by this train I mean 12697/98 belongs to TVC div , in that case it cant stand in MAS for longer time . This train and 12695/96 is more of a day connectivity for TN and overnight from PGT to TVC . TVC mail is more of a day connectivity at KL and night at TN.