Care to explain what you mean in greater detail, here?
It's easiest to see with Se contrasting with Ni. It's not so easy to see with Te informing Ni.
Without a clear awareness of Se, it mostly gets in the way of Ni. The pattern of how Ni thinks is a kind of focusing-not-focusing, what Nardi aptly describes as a kind-of-Zen state that all people use when performing an activity in which they are a true expert. Ni uses this state all the time: one focuses on the problem at hand, synthesizing the data one has already absorbed, pushing all other concerns away. Se directly intrudes on this state for Ni, even for someone who is fairly aware of the role of Se. Similarly, Fe throws Ti for a loop, Si throws Ne for a loop, Te throws Fi for a loop.
They're antithetical - except they're not.
Without Se, Ni is completely ungrounded. The Ni dom usually doesn't realize that the reason the sensory stimuli of the outer world intrude on his thinking is precisely because they
inform his thinking. The real disturbance isn't that Se happens at all, but that it tends to happen ALSO when the Ni dom needs to process what has already been absorbed, and absorbing more disturbs that process.
So, without awareness, one will only randomly absorb/reject the contribution of the inferior. At worst, one will always reject the input of the inferior, and possibly appear to be insane.
What good is Ti, if it doesn't come up with ideas for the betterment of everyone (Fe)? How does one prioritize anything using Te, if one doesn't have values (Fi) to indicate priority? How does one think outside the box (Ne), without a box to think outside of (Si)?
By being aware, one is more likely to favor the varying inputs of the tertiary and inferior appropriately, learning how to properly reject bad input (e.g., a selfish Fi desire to get one's own way) and keep good input (an Fi desire to make things work well for everyone).