I see a lot of self-projection in your insults.
First and foremost -- absolutely no one is talking about interval training except you.
Second, Cheptegei's 1500m race, was not the race you describe, but a training preparation for the Olympics, as Cheptegei told us in his own words.
What did I say wrong about Lydiard? I said that Lydiard's athletes were not running the 1 mile at 1 mile race pace, 12 weeks before "THE RACE". The schedules and fractional efforts only confirm that. Rather than showing me wrong, you just confirmed I was right. Lydiard didn't call it 3 mile race pace, but instinctively, by specifying the fractional efforts, he was having them run in practice at a much slower SPECIFIC 3-mile race pace for 1 mile. Only after 6 weeks did they race at full effort.
Maybe you read Halberg's autobiography, maybe not. No way to tell if you don't quote anything specific. Did he say how fast was he running 1 mile 12 weeks before the Olympics?
In Cheptegei's own words, this "race" was not only a race, but a training that was his first speed test in preparation for the Olympics run at 105% (speed) of his 5000m target race pace. As Cheptegei explained in his own words, he was happy with the race because he ran his 5000m/10000m pace.
I know you refuse to believe the facts in front of you, pretending they mean something else, but I have to side with spoken and written words Cheptegei and Lydiard.