I can telnet from Router A -> B -> C -> D.
Now, from router D, I can ctrl-shift-6-x and get back to router A. Router A will show one connection to router B. How, if even possible, would I be able to break from Router D to Router C without quitting the telnet session? Is there a keystroke that will let you do that?
Also, does anyone (Edison?) have a list of Cisco supported, undocumented keystrokes? I've looked and can't find much on it.