Not at all true. both were trying to contact the other but to no avail.
marciovp
Not so, this attempts were made later. The Legacy flew at 370 with the ATC radar showing 360Z360 for a good while and one did not try to contact the other. It was later that they tried to contact
Your source seems to relate only to ATC transcripts but with the radio silent on the ground from the Legacy does not mean that attempts were not being made in the air from the Legacy.