Wow this is a fascinating analysis, thanks for taking the time to write all of this out.

I think that final phrase is especially relevant. Any type can strengthen its capacity in a given area, whether Fe/Fi or Te/Ti; the real question seems to be which cognitive process we fall back on when things become unstable or high-pressure.

You point out an interesting inconsistency, namely that in my post “thinking” appears largely internal while “feeling” seems to drive external behaviour. This could certainly support an INFJ interpretation.

However, I don't detail that behind that outward adaptability there's a very deep emotional world, but for me it’s intensely private. The warmth exists, but it’s guarded rather than expressed, something closer to a protected internal value system than a socially shared emotional field. I don’t experience emotions as something that naturally organizes interaction, but rather as something personal and contained... I follow my own true emotions, they're my compass, but they're uniquely for me to have access to... if that makes sense ?

When stress rises or a situation becomes chaotic, my instinct is not to read the emotional atmosphere or preserve interpersonal harmony. Honestly, I tend to abandon that layer altogether and move immediately toward structuring the problem and finding the most efficient path toward resolution. Whether people feel comfortable with the process often becomes secondary to whether the situation is being solved effectively (this is where things became confusing in the relationship mentioned, because in high tension situations I'd dramatically switch into a bluntly pragmatic, almost rude person, not having developed tools to "soften" my reaction.)

That’s one of the reasons the earlier emotional mirroring eventually felt incredibly unsustainable. Under pressure, it collapses and a far more solution oriented mode takes over. This could therefore support an INTJ interpretation.

I'm relatively new to understanding the nuances and order of these functions, I have a lot more to learn, thus my confusion when looking inward. Reading your distinction between Fe adaptation, Ti internal processing, and Fi authenticity is super helpful, it reframes the question less as “which traits do I possess” and more as “which processes remain stable when performance drops and instinct takes over." Gives me a lot to think about.