I don’t agree that GPS tracking was the reason they didn’t want him to hang up for two reasons.
- Aren’t Gomey and Hank supposed to be going “renegade” on this investigation (withouth the aid of the DEA)?
- Can’t you track a cellphone whether it is on or off? (You can)
Is it possible they didn’t want to let Walt stop talking so that he wouldn’t realize he was being ensnared in a trap? So he wouldn’t “stop and think”.
I like my explanation best:)