FWIW the following appeared in Usenet (no source given).
Q. Would not a visual at -3.8 seconds have been enough to escape ?
50 Sec: (Time remaining to collision) Tu-154 TCAS: "Traffic, traffic". (TCAS - the warning system of midair collision on Tu-154 informs the crew about the conflicting aircraft)
45 Sec: Zurich-south: "VTS29E ... Descend, flight level 350, expedite, traffic." (Controller gives the command to our crew to descend to FL350, and explains that the course of the Tu-154 intersects the course of another aircraft. VTS29E is the Tu-154 call sign. Dots designate unintelligible words or parts of phrases.)
40 Sec: Tu-154 cockpit area mike: "Begin descent." (obvious that crew on the Tu-154 understood the command. It is most probable that this phrase in Russian belongs to the craft commander.)
38 Sec: Boeing TCAS: "Descend, descend!" (TCAS system is recommending to the crew of the Boeing to descend. Boeing begins descent.)
35 Sec: Tu-154 TCAS: "Climb, climb!" (TCAS system is recommending to the crew of the Tu-154 to climb)
34 Sec: Tu-154 cockpit area mike: "Climb!, it says" (one of the crew members Tu-154 (most likely, copilot) repeats the instruction from TCAS. It is clear that they recognized the awkwardness of situation.)
32 Sec: Tu-154 cockpit area mike: "Descend, b..." (this is the comment of one of the senior pilots: Not your concern, descend. Could be the aircraft commander or the check pilot, who was also present aboard, it is said with confidence - it is more important to listen to the instructions of the controller.)
30 Sec: Zurich-south: "VTS29E, descend to flight level 350, expedite descent." (Controller repeats his instruction.)
25 Sec: Tu-154 "VTS29E expediting to flight level 350, VTS29E." (Crew on Tu-154 confirms instruction, repeats flight level - according to the rules of radio traffic, indicates accuracy. Tu-154 begins descent.)
20 Sec: Zurich-south: "Yes, you have traffic, two o'clock, now at 360. (Controller provides the crew of the Tu-154 information for possible visual identification - the heading between the nose of the aircraft and the direction to the other aircraft. In the West it is common to issue course position, as the center of a clock dial tying object to the position of the numbers of the dial. "two o'clock" means: object is located to the right at an angle of 60 degrees from the nose of your aircraft. With this instruction, the controller told the crew of the Tu-154 to look forward, to the right. But in reality, the Boeing was located to the left - at an angle of 300 degrees, i.e., 10 o'clock! The controller should have directed this instruction to the Boeing. Apparently, he intended to do this, but mixed it up.)
19 Sec: Boeing: Sound of audible indicator. (Sound reflects some action with the equipment on board the Boeing.)
13,3 Sec: Boeing: "611, TCAS-descent." (crew of Boeing tells controller that they are descending on command of the TCAS system. Pilot used his call sign without the letters, just the three numbers. Means, situation calm.)
11 Sec: Tu-154 cockpit area mike: "B... d', where is it? (crew of the Tu-154 looked to the right for several seconds, searching for the intersecting aircraft, but can't find it. Captain is irritated.)
9,5 Sec: Tu-154 TCAS: "Increase climb!, increase climb!" (TCAS systems directs crew Tu-154 to increase their rate of climb.)
5,3 Sec: Tu-154 cockpit area mike: "Climb!, it says" (the same member of the crew, which the first time drew the attention of the Captain to the indication of the TCAS, again brings it to his attention.)
3,8 Sec: Boeing cockpit area mike: <Expletive> (Crew on Boeing saw other aircraft, pulls back on yoke.)
1,8 Sec: Tu-154 cockpit area mike: <Expletive> (on Tu-154 they saw the Boeing. Crew pulls back on yoke.)
00 Sec: - 1 hour 35 min 55 s. Moscow time. IMPACT.