daisy chain panes for two/multi page reading

[0-issue]

Upon searching quite a bit I couldn't find a unix interface or command that daisy chains two ttys or a get() function that gets current ttys contents. As tmux provides a keybinding to copy current pane contents (just like a get() function in some language library would), it might already be pretty close to realizing a feature like this for users. The advantage? As our laptop screens are much wider than taller. A user can daisy chain two side by side panes and be able to see double the number of lines of text they are working with. If feasible, a multi-pane (tty) daisy chain would be even more useful for even wider screens where user can fit 3 or more "pages" of text.