I have heard many prank calls from ~2004-2007. In many of them, completely different people all mention the same thing about them "tracking the pranker", clearly in an attempt to scare the prank caller into ceasing to call them, and specifically mentioning that it's "better the longer the call goes on" because it "makes it easier to track you". They often mention that they have some other family member "with the cops right now on another phone" and how they are "getting closer to finding your location every second you keep talking".
What is this all about? What is it based on? Some sort of silly pop-culture spy/secret agent TV series from the 1970s or something? Is it in any way based on reality? Why would they all say the same thing if they are just making some nonsense up?
Even if we assume that random normal people had such "tracking gear" in their homes, which in itself sounds beyond absurd, why would it matter how long the telephone call goes on? Surely it's a boolean "true/false" if they can determine the caller's phone number/identity/location?