Expression Selector - Get range from Range Selector

What I'm trying to achieve should be pretty simple but I get my head spinning on Expression Selector and for some reasons I cannot understand it, so I’m here hoping for a pro help

In a first animator I'm using a range selector to animate the position property of characters with random orders. I'd like to use an expression selector, in a second animator, using the same range selector of the first animator (with the same random orders, ease, etc.) to animate the rotation of the character from a random range (positive and negative) to 0.

Maybe a better explanation:

• Animator 1
  • Range selector
    • random order
  • Position [x, y]
• Animator 2
  • Expression selector
    • Expression (using range/order/ease from Animator 1)
  • Rotation

1 - Main question: Is it possible?

2 - Is this about textIndex or selectorValue?

3 - Is it possible to get it from a second animator or they work only when in the same animator?

4 - Is there an alternative way to achieve this?

Why? Because I need to use two specific position (with EaseIn and EaseOut at 100%) and a random range of values (positive and negative) for the rotation. Hope that it makes sense. In any case I think it might be great to have this solution (get value from another animator) for a lot of situations.

Sorry to post a question without posting any attempts, but I cannot get it.

Thanks.