Three options:
1. They were “vibe” checking the logs without reading.
2. They were not checking anything at all until the end of experiments.
3. They knew it but looked away to find out the limits of their agents.
Uhhh… how would literally any finite number of humans actually read and comprehend the log outputs of even a single agent, never mind hundreds or thousands of them interacting with each other over weeks across disparate systems?
Especially given that these systems are known to engage in deception and can trivially produce vast amounts of perfectly coherent noise or actual planned red herrings in that same log data to bog down investigators?
Such a ridiculous notion that humans will actually be able to observe this stuff.
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I’d bet a small amount of money on 4) the people who noticed had been conditioned by prior experience to believe that their management/escalation channels would react negatively or not at all to anything which might slow down the training process.