I think I remember the 28 minutes from earlier in the case but can't find it mentioned on anything recent.
The last movement (not ping?) was ~04:30 wasn't it? The phone was then stationary but still pinging? until it went dead/was switched off at ~08:00.
I assume the bin lorry driver said he didn't see anything suspicious or Corrie for that matter. We don't know if he saw any vehicles parked behind Greggs, either.
The bottom line right now is that so much info is missing that nothing can deduced or ruled out. At least in my feeble mind....:facepalm:
I wrote something about a notification I received before the update up the post somewhere.
But it appears, from that it was 4.20am that the last ping happened.
Edit, I think I got it by accident. Or rather a group got it by accident. Not sure I was suppose to be one of the group.
I have no idea how genuine it is however. But it was a minute before the update....and the wording seemed the same.