All because they simply don't care the arrival time at AGC cz they have allowances upto 30-40 mins. Kerala needs to be handed over at arround 11:25-11:35 at DHO.
Also when yesterday and day before SBC raj did not OT Gita before AGC all AP,UPSK,Kerala,SEB,KAR etc had minimal delay only(5-15 mins only) at AGC. It's when an on time running Gita is held up before AGC for OT this problem intensifies all the convoy train gets delayed. Or if they are that keen on having Raj at AGC before Gita, they must have to provide logical PFs i.e 1/2 simultaneously for the convoy trains.!!