Christopher Oliver was sleeping at a friend’s house in mid-September when they noticed he had stopped breathing.

No one knows how long it had been, whether he had asked for help or what time he had died.

“They can’t say whether or not he used his phone, or how long it was between the friends noticing that he wasn’t asleep as they thought that he was, or how long it was before they rang an ambulance,” his sister Sarah said. “I don’t have a timeline.”

At the same time Oliver was experiencing a medical episode, Optus was experiencing a triple-zero outage that was later linked to the deaths of three people in South Australia and Western Australia.

When word came through about her brother’s death, Sarah began the difficult grieving process.

“I had a couple of days where I was just floating

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