Fi-Te:
Fi-Te quadra types - in a "pure", "unrealistic" situation - would prefer to communicate in ways that avoid any selection or interpretation of information - in a "robotic" way even. Which is why, by the way, at least the rational Gamma/Delta dual couples become increasingly "unemotional" with time, at least to outsiders -- they find comfort precisely in the reassurance that there is no need to select information with that particular person, no need to "read between the lines".
So, Fi-Te's way of getting "correct" information is to choose the specific sources of information (not necessarily human beings, but it's more illustrative if we think of it that way) that they can trust, and then in principle take all the information from those sources at face value.
The downfall of doing this: if you choose badly those specific sources of information (or individuals), because then you're vulnerable to all sorts of misinformation.
That's what makes Fi-Te types so sensitive to being lied to, or to any other breach of trust, or even to receiving "softened" information even with good intentions.
Fe-Ti
Fe-Ti quadra types are far more "open" to the specific sources of information, that is, they are not selecting information based on their sources -- they get it from everyone; however, rather than "filter" it through Fi by selecting the sources carefully, they "filter" it through Fe (which already reads between the lines) and Ti (which sees what really makes sense and what is just, uh, padding or make-up etc).
The downfall of doing this: your "filter" may lead you to be "biased" towards information that already fits certain already accepted notions; or be open to information that is factually unsustainable, but makes sense according to Fe and Ti.
That's what makes Fe-Ti types so sensitive to "accusations" that the ideas they most deeply believe in are wrong.
In both cases, what they are reacting against is anything exposing the vulnerability of their filters.
Hence the mutual accusations between Fe-Ti and Fi-Te of "narrow-mindedness".
To Fe-Ti, it looks like Fi-Te will only listen to specific sources or individuals, so "biased" towards them, or "narrow-minded" or "naive".
To Fi-Te, it looks like Fe-Ti will only listen to what confirms what they already think - so, again "narrow-minded", or "circular thinking".