I will write the events in sequence but in a brief manner. Later on questions will be asked. Correct me if I'm wrong anywhere.
First of all Cooper and his crew go through a wormhole that is near Saturn into another system (Gargantua's system) where they go to Miller's and Mann's planet and after an encounter with Dr.Mann, and after docking with Endurance CASE warns Cooper that Endurance is slipping towards Gargantua's pull. Then a lot happens and Cooper and TARS end up in a tesseract and after relaying the data
Is it that "they" the 5th dimensional beings (after the job is done) safely scoop Cooper out of Gargantua (the tesseract actually; which is not in Gargantua's singularity but in the 5D box) and send him back in that 5D box through the extra dimensions back to our solar system through the SAME wormhole through which he came in first to visit Miller’s and Mann’s planet which is also near Saturn?
If it is that then why does this timeline show as if Gargantua was used as a wormhole to transport him back to our universe? I mean Gargantua is a black hole and so the picture is misleading right? It also shows the same structure of Gargantua on below left of Cooper station in our universe as it was in the other system (Gargantua's system), but there is ONLY ONE wormhole which has no resemblance with Gargantua’s structure. Am I right?
See the image, you will find in the poster infographic below that they have written wormhole (which they use to go to Gargantua's system) as a black hole! That is wrong, am I right?
So was the wormhole they came through a "normal" wormhole or actually a black hole? And is Gargantua a wormhole or a black hole? What explains the contradictions between this infographic and how I understood the story, did I misunderstand anything or is this picture just inaccurate?