It's odd that it works like that, if that's how it works. Someone must be in charge of checking up on anyone claiming on the Uber/Lyft Period 1 policy.It isn’t double coverage. It’s much better coverage for you the driver during Period One. Also it’s full disclosure to your personal insurer as to what you’re doing.
If you have this coverage and get in an accident during Period One, your policy rules.
If you don’t have this coverage and there’s an accident during Period One, the Uber/Lyft policy rules. But the liability limits are very low.