That will be a tideous jrney..
sbc maq shatabdi will itself be a long jrney for a shatabdi... mas maq will be toooo muchh.
and if shatabdi class is considered, maq is already well connected through air to sbc & mas.
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i dont know if there will be any among shatabdi affordable passengers who will opt for 10 hrs from sbc & 16 hrs from mas instead of 1-2 hrs flight jrney.