The thing that bugs me the most is that we have created systems to prevent this type of thing, usually because of past incidents. We then hand over responsibility to a human/pilot which allows for human error, despite said system saying there's a potential problem. Why not just listen to the system and take the safe route out of caution, like having either aircraft divert. I get that it's more prevalent now due to the amount of traffic and having to decrease the safety margins around busy airports to even handle the amount of load they are having (looking at you SFO), but it's playing with fire and ignoring the rules and systems that have been written in blood.
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