R7000 AP mode - how is the wired communication done?

Hi Guys,

Might be a question which has been answered before, but was not able to find a specific answer, I have 1 R7000 acting as normal router and switch (so wireless and wired devices are connected to it) to extend both my wireless signal on higher floors and create additional wired ports I have bought a second R7000. My question is when I put the device in Access Point mode will the devices that are connected through an ethernet cable communicate over the wann connection or wireless connection to the main R7000 router?

so setup is Modem --> r7000 as router --wired connection --> R7000 as accesspoint --> multiple wired connections to various computers.

Regards,

Paul