You are right. They are indeed fully linked. Also with the key command. And haven’t figured out why it sometimes different behave, eg. focuses the selected track (gets it inside the view in case it’s not) and sometimes it doesn’t.
But I found a better way of focusing the selected track now anyway, which is renaming the selected track and then escape. Or with a macro, “Rename Selected Track” then “Focus → Back”.
This will center the track on screen.