heh heh...whatever
And they failed to do so, didn't they? Perhaps the 800 pilot decided simply "In TCAS we trust".
I suppose at 350 kts things happen even quicker. It is hard enough to see a glider at 100kts, let alone at 350+ (this was at 16000' too) so perhaps they just didn't see each other??!?
You wanted to bring up statistics - you quote them. Don't present something you've made up and then challenge me to prove the opposite.
Go through all the AAIB reports and NTSB reports and read them for yourself. I have read a good many of them and don't recall one being in IMC. I can't be bothered to spoon feed them to you.
About 10% of all Airprox are glider-related – that’s about 20 incidents a year. Almost all occur in Class G airspace which is of course for everyone to use. In such airspace, “see and avoid” is the primary means of collision avoidance.
From Lessons Identified | UK Airprox Board
Perhaps you should ask yourself why more and more glider pilots are taking up FLARM, and why many in Europe already use FLARM. Perhaps nothing better than see and avoid has existed for GA aircraft until now?