When the first stops equal or exceed the actual bottom time, then its a multi-level dive.
No deco program or model will make or suggest a 29 min deep stop. Deep stops are a few minutes only. The Nedu program used a profile that tried to emulate something by magnifying it ten (10) times normal. This is clearly beyond "sensible bounds", and highlights the absurd and unrealistic levels the Nedu test used to create a biased outcome.
This confirms another point, that the Nedu A2 profile is a hand made creation, and NOT a product of some imaginary bubble model. We knew this already because the project designer (Gerth) was on video some 16 years ago, giving a pre-test briefing describing how and why the ascent deliberately inserted this unnatural feature.
Thank you for finally realizing the Nedu test is not representative of tech profiles or deep stops. You can argue about extra on gassing in the nedu test, but the amount in the test is not realistic or relevant to real diving conditions.
A diagram to show this...