That will work, BUT, there is another option without needing to add analog cables if you want to continue to use the integrated amp. Go into Setup> 2. Speaker > 1.Configuration >Zone 2 Line Out and switch it to Zone B. Exit setup.
Now, press the Quick Menu button on the remote controller. Scroll to Audio, press Enter and go to Zone B setting. It should be Off. Switch it to “On (B)” NOT “On (A + B)”. This will turn OFF the receiver’s amps and the incoming signal from externally connected devices should be output from the integrated amp. If not, check back.