Some more information given in this article that just came out....
Andrew Porter and Ian Stasko sent their last communication Sept. 11. Porter’s fiancée says they are experienced, but whatever happened “depends on if they were in sound mind, if they were disoriented or panicked, or if they were hypothermic.”
coloradosun.com
The last ping came from near Stasko’s car,
which was parked at the trailhead. But Murphy said she believes she has pieced together what might have happened that evening, based on gear police found in the car when law enforcement officials broke into it after she and Porter’s mother called the Conejos County Sheriff’s Office and the local Colorado Parks and Wildlife game warden Friday evening.
Officials found wet clothes in the car, which told Murphy the men had been in inclement weather and had come back to change, likely when they sent their location Thursday. But none of the gear Porter would need to hunt, harvest or pack out an elk was in the car, which told her they’d likely gone back out hunting.
“We didn’t find his bow, his butchering knives, his game bags or binoculars, things he would take with him to go kill an elk with the hope that they could start packing it out to the car that night,” she said. But when she had hunted with the men before, she said they’d come back to the car and slept in it.
She isn’t sure what “backups” the men took with them, including a tent, she added.
But Thursday night, when she believes they were out, the weather turned inclement, with “bad, cold storms and fog that came in quickly and continuously until Sunday morning,” she said. “So if they were fine, he would have come back to the car, and if his Garmin was dead he would have charged it, and he would have sent me one message. But no, that’s not the case.”