If (a big if!) it is the case that the DHL aicraft initiated descent in response to the TCAS information (and possible ATC traffic info) and the Tupolov after eventually receiving his descent instructions (Swiss controllers apparantly gave 3 calls) commenced his descent, the concern I have for TCAS confusiuon mentioned previously has been realized. Latest reports (from a Swiss ATC source) also inidicate that the aircrew on the Tupolov were having no problems understanding or speaking english.
