Even if a transmission was made, we can't be sure the other bloke heard it. Not hearing it doesn't mean it wasn't made. We don't really know when or how the deceased pilot died or whether the other one survived. Can we say for certain that the chap seen from the back on the news was actually the other pilot - or even a pilot at all?
yupp, if I got that right turkish pilots used 121.5 MHz, frequency which Russians use only in emergency situations, so they are likely both right in that respect...if they thought there would be any chance of missiles fired upon them they would certainly listen to that frequency, actually they wouldn't go there at all without fighter escort