How to use cinemachine to solve this problem?

In my project, I already use cinemachine to move around a target object in order to interact with it.
Now, i need to make a transition that brings the camera up a few meters over the object, and as soon as it reaches the upper part, fades to black, then, without the player being aware of it, moves immediately the camera to a different target while the screen is still black, and then makes the scene reappear again.

The idea is to simulate a movement towards an upper part of the scene, but actually change the target of the free look to a different game object.

I tried with a virtual camera, but i have 3 problems:
- i can't set up the timing of the fade to black while moving up, it starts too early.
- i don't know how to fade out when im arrived to the new target object, because the transition has already finished before that
- The worst problem is: if i do the virtual camera thing, the target that is above my object has an orientation, so the virtual camera not only goes up, but ROTATES around the object to align with the target. this is not good, i just want it to go straight up. How can i solve this?

Is using the virtual camera even right? isnt there a way to just apply a movement to the camera that goes up a bit without setting a specific target?