dual-homed wan topology

Hey ITPro! I just finished the "Describe WAN Topology Options" show from the CCNA Route/switch 2018 track. I have to say, that piece on Single vs dual homed topologies confused the heck out of me. could you take a peek at this screenshot from the class, I added a question. Any chance there is a typo somewhere in the snip from the show notes or the example?

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