Train No : 22640 (Allp ~ Mas) getting delay more than an hour. In Past 3 months its more than 13 times ( Min 40 min ~ Max 3.30 hrs) delay in arrival @ Chennai. In Coimbatore its Departure @ 10.30 pm. But arriving Chennai more than an hour delay. But Train No : 12682 (Cheran Exp) reaches the Chennai @ 15 ~ 20 min delay (Which starts Cbe @ 10.40 pm). We totally disappointed to travel in this train.