I remember reading something about the baggage handling at respective stations a few years ago. Found confirmation of the same. Sounds even more high-tech than what I had imagined!
The Sibag Train baggage handling system from Siemens Mobility will offer passengers an added convenience: travelers to the airport will be able to check their baggage in at the metro stations at New Delhi City Airport Terminal Station and Shivaji Stadium City Airport Terminal Station. There they will be able to pick up their boarding cards, get on the Airport Express and ride to the international airport. Upon arriving, they can then go straight to the security check and proceed to their departure gate. Independently of this, the baggage which they checked in at the metro station will arrive at the airport, where it will be fed into the existing baggage handling system, taken through the automatic security check and loaded onto planes according to their respective flight destinations. To ensure seamless baggage transport from the station to the airport, the baggage car of the train will also be equipped with a conveyor system. An automatic container loading mechanism located on the station platform will automatically load the containerized baggage through the door and onto the conveyor in the car. When the train enters the metro station, the container system will be aligned precisely to the loading door of the baggage car. Passenger boarding and container loading happen simultaneously and very quickly to shorten station dwell time for the train. The whole process will be controlled fully automatically and accurately by Sibag Train.
Let’s see what is actually implemented