I mean, the Warner Siblings were from the 30s and were around long enough to star in several cartoons before they were locked away in the water tower. AND THEN, in the 60s and early 70s, the Warner Siblings were let out of the water tower because the studio wanted to rent them out to other studios for a quick buck. The Warners hated this enough that they eventually fled back to the tower and refused to come out until they got their own show (90s). So, not only could they have known Bendy and Joey Drew Studios when Bendy was in his prime, but they also could’ve been around for the in game events.
I love this moment between the siblings! So cute how Dot helps wakko correct his Programme (booklet) and she turns it for him from upside to proper correct position. meanwhile while this happens Yakko takes notice and looks on to see Dot helping wakko and by the end you can see how proud he is of both his siblings. As his expression shows he really cares about them! The last screenshot he looks way to happy then before :D