With Guruvayoor MDU train being extended , this makes back to back train from Kollam with chennai express leaving at 12:00 and the next train to MDU at 12:15. It does not make sense. This train should be changed back to its original timing - that is when it used to be a Quilon Mail. It should leave MS at 22:00 PM and arrive TPJ at 03:00 AM and MDU at 05:20 AM and SCT at 08:55 AM and arrive QLN at 12:30 PM (After the GUV MDU leave the PF) and the return 16102 timing is like it should leave QLN at 14:00 PM and SCT at 17:00 PM and MDU at 20:10 PM and TPJ at 22:20 PM and arrive MS at 04:00 AM
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It can go to PM from 04:00 AM to night 20:00 PM - This would be the best timing for this Quilon MAIL aka Quilon Express.
With this timing , they can short terminate ananthapuri back to Kochuveli or Central station.