Electric for 95% of driving, gas to eliminate range anxiety for the few longer trips per year. Use the gas for charging the batteries - no connection between gas engine and electric drivetrain.
Almost all of them have a connection from the gas engine to the wheels. I don't know if it is still the case today, but no that long ago many hybrid models even reused the same automatic transmission from the ICE version of the car. Hybrids are not designed as an electric car with a generator, the drivetrain is truly "hybrid" and send direct mechanical power form the ICE to the wheels
Much easier to manage your own predictable resources than try to shove your use-case into another organization's framework.