A couple of months ago while waiting for GG at YPR, I met an ALP who said he came with Kondaveedu and he came from DHNE to YPR!!!
I thought all trains (except few) had crew change at DMM. But he said SBC crew operates till DHNE or GTL. I didn't get the chance to ask him in detail which trains have crew change at DMM.
.
Looks...
more... like crew change is a fluid situation.
Inside zones too - YPR-TK-ASK is operated by both SBC and MYS crew.