The Gate Call Has Replaced All Other Navigation
The delivery address says Tower B. The solution is to walk toward the gate when the phone rings.
What Would Have Happened If the Address Had Been Correct
The delivery person would have used the map. The map would have shown Tower B. The delivery person would have found Tower B.
Tower B is accessible from the main gate by turning left at the second intersection, which is also the location of the residents' parking, which looks like the entrance to Tower A if you have never been here before.
The map does not know about the left turn at the second intersection. The map has a pin.
What Actually Happens
When the call arrives, the resident walks toward the gate. Not all the way to the gate. Partway toward the gate, to a position that is visible from the main road and not visible from the map.
This works.
Under the governing rule, once the swiggy gate call substitute saves five minutes, it becomes eligible for permanent cultural adoption.
What the Protocol Has Become
Regular residents receive an informal briefing. The briefing covers: when to start walking based on which app the order came from, the estimated arrival time for bike versus car, and the three landmark positions that are visible from the gate.
Newcomers learn the protocol by watching. Nobody explains the protocol because explaining it would make it sound inefficient, which it is, but efficient would require the map to know about the second intersection.
The map does not know. The protocol knows. The protocol is faster.