I disagree, whenever and wherever the text/msg/electronic device was used is NO confirmation of MR's story. It only confirms that it was used by someone at that time.
There is no indication that Dylan made it to MR's home and there is nothing that indicates he did not make it to MR's home. With that in mind, even IF a signal was given from a text at 9:37 from within the house, saying anything, it only indicates that Dylan's electronic device was used. It doesn't indicate by whom it was used.
It does not confirm MR's timeline one bit. His timeline is that he picked up Dylan from the airport, they went to Walmart & McDonalds, they drove home, they tossed the football around, that Dylan fell asleep early, that Dylan wouldn't wake up in the morning (also that he did wake up and respond and also that he was out like a light) then he went to run errands.
You (people in general) would not expect someone to say, I picked up my son from the airport, we went to Walmart & McDonalds, drove home, tossed the football around, he sent a text message to his friend, I killed him, got up in the morning and ran my errands, came home and disposed of the body, reported him missing. If MR had said something like that, then YES the text at 937 would certainly corroborate his story. My point is that MR never said anything about a text and nobody yet can confirm or deny that one or both ever arrived at the home.
If LE could arrest people based on no evidence and gut instinct only then we are in a world of hurt.
IMO