Coromandel touches CHE and VZM at odd time,that is why many people did not demand halt strongly for this. leave about JJKR even TDD has halt for Coro. many trains that stop at PSA does not stop at CHE. this is due to lesser income at CHE than PSA;more over CHE station is located in Amadalavalasa and not in Srikakulam. many ppl will prefer non-stop AC bus to VSKP which they can reach in 1:30 hrs.
one more funny thing is SC-Shalimar exp stops at PSA and SPT but not in CHE.