Dynamic Output based on cross tab inputs

[Bkisley]

Here is the setup
I have a summary tab that is dynamic based on my "Toggle Menu"
This toggle menu lets me change the scenario, if my growth is low/medium/high, and 6 other inputs.
My Toggle Menu is on one tab which has the scenario definitions and a chart that shows on/off for all my variables
My Summary is on a different tab and that one has all my financials cleanly presented.

The ask
Is there anywhere I can have it so I can have my scenario dropdown on both tabs and make them linked to one another WITHOUT a macro.
Let's say Tab1 Cell A1 is my scenario dropdown - think Scenario 1, Scenario 2, etc. By changing this cell I want/need the value in Cell A1 on Tab2 to change to what I selected on Tab1 AND have the ability to change cell 1 on Tab2 while on tab2 which will then update Tab1.

Aka I want/need the non active tab to be linked to my active tab and make that dynamic so I can go back and forth and change one tab which will change both

Please tell me this is possible - hopefully this all made sense! Thank you in advance!