AE Live Link
This command can be used to disconnect an After Effects Live Link connection - but cannot be used to re-establish the connection. A connection can only be established in After Effects.
The command’s icon will be highlighted with a blue background if After Effects Live Link is active. Live Link can then be disconnected by executing this command; the command icon’s blue background will then be removed.
If this command is grayed out, the function must be activated in the Preferences menu (Communication / Live Link enabled at startup).
Details about After Effects Live Link can be found under Live Link.