Tamil Nadu Express - எங்கள் உயிர் துடிப்பு - Vijay Baradwaj

Yesterday had been to South Bangalore City Junction(SBC), What i've seen will try to make out.
1.Udyan departed from PF 1 with KJM WDP4B
2.Ernakulam-Bangalore Intercity arrived on PF2 with badly maintained Coaches, All coaches had Green colored Advertisement(Feels Real "Garib"rath)
3.Island Express with WAP4 of Erode was at PF 3
4.Sangamitra...
more...

from patna arrived to PF4 with ERODE WAP4 more of the time it gets WDP4/4B of KJM from MAS
5.CMNR-TPTY was at PF 5 with RPM WAP1( Very next to loco 2 sleeper's were attached called S7 and S8 respectively, display Board was SBC-TPTY not CMNR-TPTY)
6.Hampi Express Bound to HUBLI was at PF 7 with KJM WDP4B
8.NZM Raj departed from PF 8,immediately Rani CHANNAMMA was placed into PF 8 wit h KJM WDP4
9. UBL-SBC Passenger arrived to PF 9 with KJM WDM2, within few PF 9 was cleared for KANNUR Bound 16517
10.16517 arrived/allowed to PF 9, 1 3AC and 1 SL was attached as Extra Coaches very next to LOCO
11.After Rani Chennamma Departure MYS-AJMER express was allowed to Enter PF 8
12. HUBLI-SBC Jan Shatabdi entered PF 9 after departure of 16517 with KJM WDM3(14***)
Need clarification : CMNR-TPTY gets any additional coach at SBC? if So from when it is getting additional coaches.?