For me, I believe that there is only an end to the relationship if both parties agree to confront the situation and it must be a mutual understanding to part ways like any other relationship.
If there is no communication between the parties, how can they both know that there is an end to it if neither of them understands what the other is thinking?
All I know is that once the Twin Flame Awakening happens, neither of the Twin Flames can interfere in their personal spiritual growth.
Whether both Twin Flames choose to hide from each other or not the Twin Flame shared energy will still grow within themselves.
From a physical perspective, no action brings no results. If the Twin Flames don’t work towards a Union, nothing will happen.
I hope that my perspective helps you.