Suppose that I have two screen sessions (screen_session_a and screen_session_b), both of which have several windows (window_1 to window_n).The hierarchical layout looks like this:+--+ screen_session_a|  +- window_0|  +- window_1|  +- ..|  +- window_n|+--+ screen_session_b   +- window_0   +- window_1   +- ..   +- window_nI'm aware that switching between windows within the same session can be done efficiently with <CTRL> A-n, <CTRL> A-p, and so on. But now let's say I want to switch windows from different screen sessions, e.g. from screen_session_b/window_1 to screen_session_a/window_1.At the moment I would do the following:Detach from screen_session_b by hitting <CTRL> A-dAttach screen_session_a with screen -r screen_session_aIf window_1 is not open yet, switch the window: <CTRL> A-' 1 <CR>This is pretty cumbersome, especially if you need to to that very often. So I wondered if there is a more efficient way to switch between windows across different screen sessions? 
Quick switching between screen sessions
gnu screen