Avoiding action ?
Based on the skyguide (Swiss ATC) press report, the first command to the T154 to decend was issued about 50 seconds before impact;
It will be interesting to see if the ATC used the words ..."Avoiding Action" or ..."For Traffic Avoidance" in this transmission.
I cannot believe that it is standard procedure to allow aircraft to be on converging headings at the same level with 50 seconds to go before crossing