WDS vs Extender Mode on all-GLi network

Technical Support for Routers
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When using one GL-iNet device (“B”) as a ‘repeater’ with another GL-iNet device (“A”) as upstream, and both devices using 4.x firmware, and wifi networks on both devices using WPA2-PSK…

…If one wants all connected devices to be on the same subnet, and all devices wirelessly connected to B to get DHCP from A, what is the preferred Network Mode: WDS or Extender Mode?

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(I think the answer is “WDS Mode” in most cases, but I’m looking for input and knowledge from anybody who knows the same or different. I believe using Extender Mode can interfere with broadcast traffic)