The timeline of Kuzan joining BBP doesn't make much sense and that's still a genuine issue
The 10 titanic captains were a properly etablished thing by Dressrosa as Gatz casually introduced Burgess as being part of "10 titanic captains"... yet Doflamingo despite his massive intel network only said he heard *rumors* concerning Kuzan and neither Smoker nor the marines had any idea of what Kuzan was doing and were shocked to learn he could have black market connections...
Either Gatz is actually supposed to have much better intel than Doffy and the marine or Oda purposely fucked up with the timeline due to wanting to keep Kuzan's status mysterious.
The 10 titanic captains were a properly etablished thing by Dressrosa as Gatz casually introduced Burgess as being part of "10 titanic captains"... yet Doflamingo despite his massive intel network only said he heard *rumors* concerning Kuzan and neither Smoker nor the marines had any idea of what Kuzan was doing and were shocked to learn he could have black market connections...
Either Gatz is actually supposed to have much better intel than Doffy and the marine or Oda purposely fucked up with the timeline due to wanting to keep Kuzan's status mysterious.