So, his starting time estimate of 1.29 was a rational assumption. So what? He needed a starting point and he found one. That's it.
The fact that he needed one is not what made it a rational assumption.
You could only have done that for the Tippit shooting if the recording during that period was continuous, which it wasn't.
If you are stipulating that it be as accurate as Bowles’ report and accurately cover an extended period of time. Then I might agree. But the event that enables Bowles to closely associate his derived time to Central time is the known generally accepted time of the JFK shooting. Not just the continuous recording aspect alone.
None of this has any relevance for the Tippit murder. There was no continuous recording nor an event that could be used to fix a starting time.
You can not have a DPD call to the ambulance service at 1.18 on the transcripts (which means the ambulance was there at 1.19 at the latest) and have Scoggins say that he was calling his dispatcher when the ambulance arrived at 1.23.
The 1:23 is the time that Scoggins said that the dispatcher indicated to the supervisor that he recorded the call. Not what you said above.
Hang on, you were relying on the time Scoggins gave to somehow "prove" that Bowley's watch was slow and you even went so far as to argue that the cab company's clock was better calibrated than Bowley's watch. So, your intention was clearly to present the 1.23 "recorded time" as the time the call actually took place, when it clearly wasn't.
Now you basically say; Scoggins claimed he heard from his dispatcher that the supervisor had written down the time of 1.23 some time after the actual call took place. In other words, it had nothing to do with a calibrated clock and it could have been written down minutes later, depending on whatever else the supervisor was doing at that time.
So all you've really got is a double hearsay of a time that is not the actual time the call took place!
If you had presented this argument in a court of law, you would have been laughed out of court and probably reprimanded by the Judge for wasting the court's time.
Scoggins' time of 1.23 is completely meaningless and does not influence the time line I have presented at all.