PIA Chrome uses Chrome browser, OS is PIA OS.
PIA Chrome uses Chrome browser, OS is PIA OS.
It's useful when you lack access to the original Windows application and/or prefer not to rely on it, such as during gaming sessions with reduced latency. Keeping both features active isn't problematic. The Chrome version also lets you connect PIA via Chrome while using another VPN, for instance a professional one to reach a shared folder.
Both apps will recognize it as a single device using all five connections.