Sorry to intrude as I'm not in any way connected with your noble trade, but it so happens I have a few acqaintances in Ufa, Bashkiria, so I guess I have a right for a question or two.
1. Concerning the BFU report. My English is not so good as, say, Ruslan's, so I never realized that "immediately" means 90 sec. I can stroll 100m in 90 sec, let alone a plane. I mean the time between the last call to FDH and the first call to Tupolev.
2. As I see, there was a small but measurable time between the "TCAS descent" from DHL and actual collision. Was it possible to prevent the collision in this time or Russian pilots only are forbidden 14sec delay?
Thank you for answers in advance and please be certain I've read all the twenty-four pages of this thread (meaning some extra questions will certainly arise if people here allow).