What works never "gets old"
Please define "astoundingly high mileage". 150+? What? They're all running high mileage.
If he is in racing season, I should hope so. Out of season, I doubt it. Regardless, how would you know?
Incorrect
Really? He's discussed this with you, has he? Is this the same Hall who just ran the fastest time ever by an American at Boston this year?
Please quote their weekly mileage and your source. A link would be acceptable.
While we don't have the time to explain to you how clearly you misunderstand Lydiard, the short explaination is that nobody ever said that duration is all that matters, least of all him.
In the future, you would do well to actually understand something like Lydiard before attempting to discredit it.