What differentiates the Cisco OfficeExtend AP mode from the Cisco FlexConnect AP mode?

Both FlexConnect and OfficeExtend modes can support various SSID configurations; the ability to configure personal SSIDs is not a fundamental differentiator between the two modes.

Both OfficeExtend and FlexConnect APs can use DTLS tunneling for traffic to the WLC when operating in connected mode, so this is not a distinguishing feature.

Both FlexConnect and OfficeExtend modes are designed to operate over WAN connections and can be deployed behind a NAT router, so this is not a specific differentiator.

Cisco OfficeExtend APs are designed for home office use and are typically indoor AP models with internal antennas. In contrast, FlexConnect is a versatile deployment mode that supports various Cisco AP models, including both indoor and outdoor units, for branch office or remote site deployments.