To my knowledge, only Saturday night matches played outside of Victoria were broadcast live into Melbourne.
In Sydney, Swans matches were delayed by half an hour regardless of where it was being played, otherwise were delayed until at least 10:30pm, and in Brisbane Saturday night matches were live regardless of who was playing (between the 2007-11 period at least); Lions matches were always live (I think).
But I do recall in 2008, Swans matches played outside Sydney were live, including those played in Melbourne.