With my Denon 2803 the 6th & 7th channel and zone 2 speaker connections are one and the same. There is also one set of pre-outs for channels 6/7 and zone2. You can set it up so that you can use the speaker connections for one (e.g. channels 6/7) and the pre-outs for the other (e.g. zone2).

Perhaps you were asking if you could use both speaker connections and the pre-out simultaneously for zone2 (4 speakers)?