The comment posted by me was just my personal view. and Talking about TVC mail there are many factors which made this train to run with a longer duration now, by the way on records it's not delayed because they have increased the actual duration by giving a buffer in the running time and most of the time it reached on time ( including the buffer time - which was not supposed to be actual when compared ) and yes another factor is diverting it through CBE, it's not running late while diverted through CBE , but its running time increased. yes, my dear friend as you said all the record shows that 12623/24 runs on time most of the time, that was made like that to hit the punctuality percentage. Hope it ran in a short duration when numbered 6319/20 ( Number 20 Madras Mail)

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12623 is the Second-fastest to reach Coimbatore from Chennai Central, After 22207, even 12243 (Coimbatore Shatabdi is third fastest)
But While on the down journey, it is in 11th position, down journey time can be reduced to reach Central at 7.00 am the earlier arriving time.

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