I’m Titanium, and booked two rooms via the GHA app.

Will both rooms get the Titanium treatment (upgrade, amenities), or just my room?
Can the stay & D$ For the ine room be registered to the person staying in the second room, I booked, if they become GHA member?

Would it make sense to share my status, or is better that I just booked the two rooms?

Sorry for the rookie question, and thanks in advance!