Instead of Mysuru it would be good if the train is short terminated in Bengaluru because no one is prefering this train from Bengaluru to Mysuru. If cannot be short terminated then timings can be canged similar to 20608.
20664:
MAS: 13:05
KPD: 14:38/14:40
KJM:...
more... 17:00/17:02
SBC: 17:30/17:35
MYA: 18:38/18:40
MYS: 19:30