Nice find...
AI 406 is usually DEL-VNS, but some days of the week operates DEL-VNS-HJR, all flown by the same aircraft. In winter 406 operates DEL-VNS-AGR-HJR.
405 is HJR-VNS-DEL. So yes, in your case it will be the same A320 that came from DEL via VNS and AGR to HJR that will turn and fly (back) to VNS. Ie you will not miss the HJR-VNS leg if your flight to HJR is late
