Both of them are useless and they run with worst timings in worst route
The demanded route is Via-NCJ, TEN, Virudhunagar, MDU, Dindigul, TPJ, TJ, Kumbakonam, MV, CDM, VM, Take any route from VM till VM if Chordline is also fine but don't take the train via-Karur, Namakkal which is of no use it will be only helpful for SA, ED people only ,the demand is between VM and TPJ stretch