Video-chatting (Zoom / Teams) / calling while walking around at home. And previously I had issues that when my phone roamed from AP1 -> AP2 that the call had a

Video-chatting (Zoom / Teams) / calling while walking around at home. And previously I had issues that when my phone roamed from AP1 -> AP2 that the call had a hickup. I fixed it by getting some more expensive equipment that supports fast roaming so I don't have the issue anymore. Maybe the author is describing when switching from Network A to Network B, or from Wi-Fi to cellular.