It was night time. Too dark to see the van. If Paddock was gonna blow the van, it would have been deployed somewhere. Who ever has that missing rifle, was also supposed to deploy the van. Imho.
I lean toward the theory that there was a second person who was in Brian Hodge’s room with the second broken window and was watching the camera on the food cart and maybe firing rounds out the window.
He got out in time, closing the door connecting to the Vista Suite and perhaps running up the stairs to the Four Seasons. Need to more about the claim that the fire door to the stairwell was somehow ‘blocked’ when it should open out into the stairwell.