Maybe but it still wouldn't prove the phone call.
In the absence of digital/satellite technology there will never be any proof that a call was or wasn't made. But the judicial system doesn't work on absolutes. A jury decides what is more or less likely based on the evidence heard at trial. As it stands jurors were led to believe:
- There was no tel in NB and June's bedroom
- The phone normally kept in the above bedroom was found in the kitchen with the handset off the cradle
- There was no obvious blood stains to the above phone
- The perp entered NB and June's bedroom and opened fire inflicting the facial gsw's to NB's face rendering him incapable of purposeful speech thereafter
- The above gsw's produced heavy blood loss
If I was a juror and heard that I would think it unlikely NB called JB. But the physical evidence shows the above is wildly wrong. The physical evidence shows NB was shot on the landing stairs with the perp already in the main bedroom firing out onto the landing. This puts a whole different complexion on what jurors heard at trial.