[SuperSajuuk]

Noticed the Amex logo on what appears to be BBC Sport-branded "game set and facts" lower third. Are domestic viewers mistakenly receiving the world feed or is this not actually a bbc graphic?

Late to this, but if it helps, the BBC stopped being the host broadcaster [and thus the producer of the world feed] in 2018. They're now just a consumer for the UK audiences only, however they continue to provide the required technical expertise, camera-people and commentators for the world feed thats now produced in-house by Wimbledon Broadcasting Services [ie by Wimbledon itself].

This continued close association is basically why the scoreboard graphic during games has only had a reskin/font change to fit the standard colours of the tournament (white, blue and green), and why sponsors are advertised more prominently, since its no longer hamstrung by the BBC's "no prominent sponsorships in camera view" requirements.