The prosecutor has stated there is an hour and 20 mins of "unexplained activity". Prosecutors' words are crafted with care. She would not be saying that if it is feasible they were at home 15 minutes after Glinton, getting ready for bed, feeding the baby, or having a cup of tea with their phones off. Just as she said they both travelled to Cowbit and you doubted she could say that with certainty and it could have just been Scott with all the phones. Prosecutors don't mislead because if they do defence barristers always object (and in this case there are two defence barristers and juniors who will be assisting) and it is stricken from the court record so that the jury is not misled. There would be no 'unexplained activity' worth talking about because it wouldn't be a feature of the prosecution case that they were travelling around in their car up to no good having disabled their phones to avoid detection.
"In the early hours of July 20, phone data was able to place Scott Walker, Sarah Walker and Bernadette’s phones in the Cowbit area - but for an hour and 20 minutes, all the phones were turned off, and there were no camera sightings of Scott Walker’s car. Earlier in the week, when opening the case, Lisa Wilding QC, prosecuting, said
this time was an opportunity to dispose of Bernadette’s body."
Bernadette Walker Murder Trial: Hour and twenty minutes of ‘unexplained activity’ as Scott and Sarah Walker travelled to Cowbit in the middle of the night after teenager went missing
Having been on a jury I can vouch for the fact that objections from both sides are constant, they are always hopping to their feet at the slightest wrong word or impression.
She said Sarah's phone was switched on at 3:03am and then connected to the home towers at Century Square at 3:07am. That is 4 minutes away from home travelling in a car, which, if they were going at 30-40mph, means it was switched on about 2 - 3 miles away from Century Square, at that time of night with no traffic. The court will have been shown a map of the cell towers and which towers were hit at 3:03am (triangulated). Her phone was actually disconnected for 2 hrs 20 mins, so it's only the last portion after Glinton that is unexplained.