PVG transfer to China Eastern in PVG question

I'm arriving on UA in Global First into PVG and 5:45 PM and was looking at a transfer to a China Eastern flight that departs at 7:10 PM.

I've read that PVG does not have a transfer option without going through security and checking in again at desk and going through immigration again. Is this correct?

If so, I'm assuming this connection would never work?

Does PVG have an express line for Premium fliers for Immigration?