As long as you keep a proper frame of reference, you'll be fine (I disable tmux's status bar on nested tmux sessions though). You can use C-a a, or something si

As long as you keep a proper frame of reference, you'll be fine (I disable tmux's status bar on nested tmux sessions though). You can use C-a a, or something similar to send a C-a to the nested session, although it can be a little annoying.