Can one ALM user session talk to another ALM user session when both sessions are in same project?

Suppose user1 logged into ALM project "ABC", in the same project "ABC",  say user2 also logged in.

Now user1 will have one session and user2 will have another session(total 2 sessions).

From the external script  OTA API or workflow, Can user1 belonging to a specific session talk with user2 belonging to seperate session.

Can user1 retrieve user2 session details, or make user2 do some particular task?

Is it possible? Please advsie.