Refer one session from another session within Codex App to add dependency

What variant of Codex are you using?

App Version 26.519.41501 (3044)

What feature would you like to see?

It would be incredibly beneficial if we had the capability to refer to an active session from another session. I typically create a plan and prepare some work, but this depends on another ongoing work that is still _active_ and may take a few hours to complete.

I would like this particular work to commence immediately after the completion of that other session.

Additional information

I am not aware of any method to refer to a specific session. However, I am aware that you can refer to agents and sub-agents, but this is the primary Codex app that runs a session independently.