My Pixel 2 running the Hangouts app transparently switches between home WiFi, LTE and xfinity WiFi (Comcast's attempt to make every one of their customers into

My Pixel 2 running the Hangouts app transparently switches between home WiFi, LTE and xfinity WiFi (Comcast's attempt to make every one of their customers into a WiFi hotspot). The Hangout connection doesn't drop. It may go fuzzy/staticy before the WiFi drops in favor of LTE but that's all.