May God also console the poor ATCO who watched it happen.
There was an incident at Heathrow a few years ago where traffic off LAM and BNN were on the usual headings, at the same level. The ATCO, well known on these forums, tried to descend one and got no answer. So he went to the other and got no answer. They got to 4 miles apart, slightly crossing tracks and dead ringers before the BNN traffic stumbled back onto the frequency. From the recording, I would say... another 30 seconds would have been too late. He thought he was going to watch a midair happen and it must have been a most awful few moments. Just watching the recording was hearthumping and I knew they missed!
This poor soul in Switzerland will always have to live with this, where ever the responsibility lies. God bless him.
Point 4