I think Temporarily Diesel locos runs between GNT - NRT section from 3/4 days.
Yesterday Kondaveedu runs with WAP-4/WAP-7 + Diesel. But that Diesel loco detached at NRT.
Same all trains runs in this route also runs with Diesel to NRT from 3/4 days.
1)UBL - BZA Passenger with KZJ Tiger Face WAG-7+GY WDG-4
2)HWH...
more... - SSPN Express with SRC WAP-4 + WDG-4 LHF Mode
3,4) GY WDP-4D twins with BZA - UBL Amaravati Express