diff --git a/config/nvim/lua/config/options.lua b/config/nvim/lua/config/options.lua
index 4caad53..12bc92a 100644
--- a/config/nvim/lua/config/options.lua
+++ b/config/nvim/lua/config/options.lua
@@ -64,14 +64,15 @@ opt.shortmess:append("c")
 -- script (rather than nvim's built-in raw-OSC-52-only provider) because
 -- reaching the real clipboard needs more than a raw OSC 52 write: it picks
 -- pbcopy/xclip/wl-copy when nvim is running locally, and when none of those
--- are available (nvim on a remote host with no local display) sends OSC 52
--- both raw and wrapped for tmux's DCS passthrough, since it can't know how
--- many local tmux hops are between it and the real terminal and tmux's own
--- native OSC 52 forwarding isn't reliable. Works whether nvim is local or
--- several ssh/tmux hops deep, on any machine sharing this dotfiles repo.
--- Paste is intentionally left as a no-op: OSC 52 read support is
--- inconsistent across terminals and can hang waiting for a reply, so use
--- the terminal's own native paste (e.g. Ctrl-Shift-V) instead.
+-- are available (nvim on a remote host with no local display) sends a
+-- single plain OSC 52 write. Any tmux hops between here and the real
+-- terminal relay that onward themselves via the pane-set-clipboard hook in
+-- tmux.conf, so this works whether nvim is local or several ssh/tmux hops
+-- deep, on any machine sharing this dotfiles repo, without needing to know
+-- how many hops there are. Paste is intentionally left as a no-op: OSC 52
+-- read support is inconsistent across terminals and can hang waiting for a
+-- reply, so use the terminal's own native paste (e.g. Ctrl-Shift-V)
+-- instead.
 local clipboard_copy = vim.fn.expand("~/dotfiles/bin/clipboard-copy")
 vim.g.clipboard = {
   name = "clipboard-copy (copy-only)",
diff --git a/config/tmux.conf b/config/tmux.conf
index 5eb65c2..c34bc27 100644
--- a/config/tmux.conf
+++ b/config/tmux.conf
@@ -52,8 +52,10 @@ set-option -g -q mouse on
 bind y run 'tmux save-buffer - | $HOME/dotfiles/bin/clipboard-copy'
 bind C-y run 'tmux save-buffer - | $HOME/dotfiles/bin/clipboard-copy'
 
-# Let OSC 52 escape sequences (e.g. nvim's clipboard writes) pass through
-# this tmux to the real terminal, even when nested behind ssh/tmux layers.
+# Let escape sequences a pane explicitly DCS-wraps for passthrough (e.g.
+# sixel image data, see the iTerm2 terminal-features line below) reach the
+# real terminal, even when nested behind ssh/tmux layers. Not used for the
+# clipboard -- that has its own relay via the pane-set-clipboard hook above.
 # allow-passthrough was added in tmux 3.3; older tmux doesn't understand the
 # option, so only set it when the running tmux is new enough.
 if-shell "tmux -V | awk '{print $2}' | awk -F. '{if ($1*1000+$2 >= 3003) exit 0; else exit 1}'" 'set -g allow-passthrough on'