I think for me emphasis is on Paul's phone because he was actively communicating with his friend about a real time issue that he just recorded a video to send him. Then he just doesn't send it. So maybe lack of service at the kennel to send a video, but he didn't respond ever again. Nothing after talking to him and then trying to facetime and then recording the video. He never followed up and that was the reason for the phone call, the attempted facetime, then the recording of the video. That really to me shows something happened to him shortly after that. He was taking the video in the kennel so likely he locked the dog in there and headed for that feed room maybe for medicine? I think at that time Bubba was being put in his kennel by either Alex or Maggie. Alex put the chicken up and then something happened. What I don't know, but only 1 other person was there and he made that very clear on the stand and it happens to be a detail he lied about until he couldn't lie about it.I respectfully disagree with that because of PM and MM's phones going dark at the times they did. All just my interpretation
In my mind the best case for those steps on Maggie's phone at 8:53 is Alex had her phone and was moving around with it. Worst case she was running for her life to avoid Alex. I think she had no activity before that for a while so that phone was either on the golf cart and she was moving around with the dogs or she was sitting on the golf cart with her phone and then got up and tried to run or as I said the phone stayed in the golf cart while she was killed and then Alex was trying to decide what to do with it and took some steps holding it.