Hi Sajin,
TVC-Chennai Egmore Express via PGT,CBE, AJJ, CGL is rarest to happen as it has many technial difficulty. It needs loco change from EL to DL at AJJ and loco reversal at CGL.
I suggest, you can demand for more AJJ-CGL-AJJ Passenger in morning and evening.
If I am not worng, you may be working in Mahendra City and home town is...
more... PGT.
So, if there are more number of Passengers or EMU from AJJ-CGL-AJJ you can take any train from PGT that comes to MAS and switch over to passenger train at AJJ(than coming to MAS and go back to CGL)
Once AJJ-Thakkolam route is commisioned we can expect more EMUs from AJJ-CGL.