Probably a raw feeling in the brain instead of something intuitive like having a HUD with green numbers representing pitch/yaw/roll/velocity/etc. suddenly painted over your field of vision.

There's likely an encoding step that you have to teach the person before you can interpret the signals from the aircraft. I bet the process is similar to learning Morse code, but with tingling feelings instead of beeps.

Even the idea of transmitting strings to a person's brain is a massive step forward. We're likely dealing with "is this a 1 or 0?" and it takes seconds to decide that. Bandwidth is likely really low still.

Very carefully, of course.