no sir,you have got me all wrong...at punkunnam,guv ms express comes from east and goes to west but reaches chennai...where as trivandrum chennai express comes from west and goes to east...it also reaches chennai...both up and down trains...going to same destination in different directions...i have one more example...
At bgp...vananchal daily express...one goes via sbg towards west to ranchi and another vananchal express via kiul goes towards jmp to reach ranchi...towards west...