An NDL diver who does not exceed 1.6 ATAs ppO2 is never, ever going to exceed ox tox limits.
Yet again youre conveniently forgetting the fact that is ISNT entirely a clock and certain percentage and the longer time or higher PO2 the more chance of an immediate acute hit. The maths is simple as well. Perfectly easy to exceed 1.6 CNS limits staying within NDLs on a liveaboard which has 4-5 dives a day and very short SIs.
He/she will get DCS first, long before CNS toxicity. Do the math.
And by what deluded mystical link that the rest of the world has missed do you use to link DCS and CNS toxicity ?! They're completely different things.
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