I am not sure about now; but for some time, this train used to come from GKP, stand at GD [ there is slack for thirty mins b/w both trains for this reasons] and then go to STP. IR, during pandemic had combined them and ran as GKP - STP special. Now they have decoupled again. But I think, based on the arrival of GKP-GD passenger, there could be an RSA.