With LHB rakes TN can have timings like this

NDLS 23.30
JHS 04.50/05.00
BPL 08.40/08.50
NGP...
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14.40/14.50
BPQ 17.40/17.50
WL 20.58/21.00
BZA 00.15/00.25
MAS 07.00

With Charminar shifting terminal, GT can take its slot from MAS and reach NDLS between 5.00 to 5.30 thus enabling TN to be speeded up and reach NDLS between 6.00 - 6.30

Charminar can follow GT's current timetable and still reach SC by 7.30 - 7.45. Charminar with LHB take can do MS - SC under 13hrs with slight upgrade in speed.
The...
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train has been running on the old end to end schedule when it had CBC rake

One thing they must consider is that Charminar has huge slack, which was even a bit high for a medium distance ICF rake train. With LHB rakes, the train can shave off another 15 to 20mts easily.

WL - BZA slack is huge for 12760. Godavari which is also a medium distance train covers this distance in 3hrs and 18mts with 2 stops, while 12760 takes 3hrs and 50mts with 3 stops. This can be covered within 3hrs and 30mts And 2.35hrs between GDR-MAS can also be brought down by another...
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5 to 10mts. That's straight away 25 to 30mts speed up.

12759's slack between TEL - BZA can be brought down by 5mts, its slack between KZJ - SC can be brought down by 5 or 10mts and SC-HYD by another 10mts which will speed up the train by another 20-25mts.

TBM 18.10
MS 18.40/50
BZA 01.55/02.00
SC 07.45/07.50
HYD 08.20

HYD 18.30
SC 18.50/18.55
BZA 00.40/00.45
MS 07.50/08.00
TBM 08.35